As Pennsylvania police investigate the gruesome murder of a grandmother in her own home, detectives sort through a web of lies and nefarious activities before ultimately going toe to toe with a cold-blooded killer.

The twisted story of a heinous murder plot in Kansas; rife with betrayal and deceit; in an exclusive interview with someone personally involved in the crime, hear a riveting account of the deadly scheme.

When a firebomb attack destroys the home of two sisters, police turn to the neighborhood for answers, but the high-profile case takes an odd turn once detectives realize they have a homicide on their hands and the culprit is much closer to home.

The murder of an Arabi, La., man forces authorities to examine every possible lead as they eventually learn their prime suspect is closely tied to an open cold case in Indiana.

Investigators work to uncover the truth behind a local church scandal in order to pin down a most unlikely suspect after a young Texas teacher is found axed to death on Friday the 13th.

When a beloved woman in North Carolina is found stabbed to death in her own home, investigators uncover an unnerving history of harassment carried out by a killer blinded by jealousy.

A serial killer in Spokane, Wash. murders prostitutes and leaves a bag with a smiley face on the victim's head.

Officials look to state-of-the-art DNA analysis to help capture a serial killer in the Louisiana State University area of Baton Rouge.

When a firebomb attack destroys the home of two sisters, police turn to the neighborhood for answers, but the high-profile case takes an odd turn once detectives realize they have a homicide on their hands and the culprit is much closer to home.

The murder of an Arabi, La., man forces authorities to examine every possible lead as they eventually learn their prime suspect is closely tied to an open cold case in Indiana.

Investigators work to uncover the truth behind a local church scandal in order to pin down a most unlikely suspect after a young Texas teacher is found axed to death on Friday the 13th.

When a beloved woman in North Carolina is found stabbed to death in her own home, investigators uncover an unnerving history of harassment carried out by a killer blinded by jealousy.

Mama Edna, a pillar of the Haitian community in Brooklyn is adored by all as the matriarch of East Flatbush; when she is found murdered in her home, NYPD uncover a Voodoo practice that leads them to a web of the unthinkable.

When a beloved landlord disappears in Brooklyn, the NYPD is convinced it's more than a missing person's case; without a body and with limited physical evidence, asuspect roams the city for years until discovering a secret witness to the grisly truth.

In the 1990s, a group of over-the-top misfits known as the Club Kids rule New York's downtown club scene; after a beloved member goes missing, a gruesome rumor circulates and detectives uncover a seedy world of drugs, debauchery and murder.

When a Holocaust survivor and the king of the disco scene is found bound and murdered on the Upper East Side, detectives embark on a multi-borough investigation, uncovering a salacious private life with a woman who may hold clues to his demise.

Two neighboring bachelors start out as friends; harmless banter turns into threats eventually igniting an escalating war; the violence ends with a murder so shocking it is almost beyond belief.

Upon landing in Rome, Cassie deals with her sudden feelings of loss, and Megan confesses that she has secrets of her own; back in New York, Cassie doubles down on finding Miranda by unceremoniously crashing Alex's memorial service.

After piecing together evidence with help from Max, Cassie follows the paper trail to an empty private jet manned by Nate; Megan attempts to hide her shady dealings from her family; Annie faces a reprimand from her boss, Diana.

Mama Edna, a pillar of the Haitian community in Brooklyn is adored by all as the matriarch of East Flatbush; when she is found murdered in her home, NYPD uncover a Voodoo practice that leads them to a web of the unthinkable.

When a beloved landlord disappears in Brooklyn, the NYPD is convinced it's more than a missing person's case; without a body and with limited physical evidence, asuspect roams the city for years until discovering a secret witness to the grisly truth.

In the 1990s, a group of over-the-top misfits known as the Club Kids rule New York's downtown club scene; after a beloved member goes missing, a gruesome rumor circulates and detectives uncover a seedy world of drugs, debauchery and murder.

When a Holocaust survivor and the king of the disco scene is found bound and murdered on the Upper East Side, detectives embark on a multi-borough investigation, uncovering a salacious private life with a woman who may hold clues to his demise.

Two neighboring bachelors start out as friends; harmless banter turns into threats eventually igniting an escalating war; the violence ends with a murder so shocking it is almost beyond belief.

Upon landing in Rome, Cassie deals with her sudden feelings of loss, and Megan confesses that she has secrets of her own; back in New York, Cassie doubles down on finding Miranda by unceremoniously crashing Alex's memorial service.

After piecing together evidence with help from Max, Cassie follows the paper trail to an empty private jet manned by Nate; Megan attempts to hide her shady dealings from her family; Annie faces a reprimand from her boss, Diana.

Peachtree City socialites Ruby Joyner and Halima Jones are found murdered in a van, igniting a frenzy within their wealthy community; when police dig into the women's personal lives, they uncover a secret that blows the case open.

When an Atlanta businessman is shot to death in front of his son's preschool, detectives try to track down the disguised gunman.

Three people are gunned down in a gold coin shop in Newport Beach, Calif., and with little to go on, detectives slowly piece together a murder plot that didn't exactly turn out as planned.

The promising trajectory of a rising star athlete from Orange is cut tragically short when he is found shot to death on a desolate road.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Badly burnt human remains recovered in a blazing car fire suggest Clayton Daniels died in a horrible road accident.

Mama Edna, a pillar of the Haitian community in Brooklyn is adored by all as the matriarch of East Flatbush; when she is found murdered in her home, NYPD uncover a Voodoo practice that leads them to a web of the unthinkable.

When a beloved landlord disappears in Brooklyn, the NYPD is convinced it's more than a missing person's case; without a body and with limited physical evidence, asuspect roams the city for years until discovering a secret witness to the grisly truth.

In the 1990s, a group of over-the-top misfits known as the Club Kids rule New York's downtown club scene; after a beloved member goes missing, a gruesome rumor circulates and detectives uncover a seedy world of drugs, debauchery and murder.

When a Holocaust survivor and the king of the disco scene is found bound and murdered on the Upper East Side, detectives embark on a multi-borough investigation, uncovering a salacious private life with a woman who may hold clues to his demise.

An elite California lakeside community is shaken when two well-to-do gentlemen go to war over a one-inch property line discrepancy; one neighbor takes the dispute to new heights when he hires a hit man to solve the problem permanently.

A three-year feud over land and morals reaches a bloody conclusion for a young mother in Miami.

In Carmel Canyon, Calif., wealthy neighbors get into disputes over everything from shared roads and bridges to the upkeep of their respective properties until anger boils over and the ongoing feud is resolved with fatal gunfire.

Peachtree City socialites Ruby Joyner and Halima Jones are found murdered in a van, igniting a frenzy within their wealthy community; when police dig into the women's personal lives, they uncover a secret that blows the case open.

When an Atlanta businessman is shot to death in front of his son's preschool, detectives try to track down the disguised gunman.

Speaking on camera for the first time, Cameo Clines revisits the deadly Texas crime spree born from a toxic romance; from behind bars, he offers a rare look into the events that led to two murders and shares his hopes for redemption.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Badly burnt human remains recovered in a blazing car fire suggest Clayton Daniels died in a horrible road accident.

Peachtree City socialites Ruby Joyner and Halima Jones are found murdered in a van, igniting a frenzy within their wealthy community; when police dig into the women's personal lives, they uncover a secret that blows the case open.

When an Atlanta businessman is shot to death in front of his son's preschool, detectives try to track down the disguised gunman.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

The promising trajectory of a rising star athlete from Orange is cut tragically short when he is found shot to death on a desolate road.

Speaking on camera for the first time, Cameo Clines revisits the deadly Texas crime spree born from a toxic romance; from behind bars, he offers a rare look into the events that led to two murders and shares his hopes for redemption.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

After a soon-to-be-wed scrapyard owner is killed, Texas detectives must chase down every lead and conduct hundreds of interviews in order to find the truth hidden behind lies, betrayal and broken hearts.

Two women with a shared wall between their townhouses become increasingly volatile with each other; food fights, physical altercations and vandalism come to a bloody climax.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

A former cop is moving into a close-knit neighborhood; conflict arises with the whole community over dogs, noise, and other disturbances that keep piling on and ratcheting up until a boiling point is reached, guns are drawn, and blood is spilled.

Two women with a shared wall between their townhouses become increasingly volatile with each other; food fights, physical altercations and vandalism come to a bloody climax.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

After a soon-to-be-wed scrapyard owner is killed, Texas detectives must chase down every lead and conduct hundreds of interviews in order to find the truth hidden behind lies, betrayal and broken hearts.

The mysterious death of a young mother in Ohio and the ensuing investigation that spans years and multiple states.

Sophisticated crime fighters map the psychological and physical terrain of multiple murderers.

A former cop is moving into a close-knit neighborhood; conflict arises with the whole community over dogs, noise, and other disturbances that keep piling on and ratcheting up until a boiling point is reached, guns are drawn, and blood is spilled.

When an Oklahoma teen finds her mother and father murdered in their family home, detectives uncover bizarre photos and use new technology to reveal a dynamic duo at the center of the heinous crime.

The abrupt disappearance of a Colorado rancher prompts concerned friends to press investigators to dig up the truth hidden beneath his ranch's calm exterior.

A man disappears after a duck hunting trip in Florida on his sixth wedding anniversary and is later found to have been murdered.

A hardworking family man gets a second chance at love with a woman who has a dark past; soon, the man's family is torn apart by drugs, lies and a treacherous murder plot.

A deep dive into some of the most chilling murder cases in New York City's recent history. New York City is a shining beacon of opportunity for people across the world and a true melting pot. It's a city with a gritty core, where tensions run high. A series of details to the brazen crimes that could only happen in New York and the intense work by law enforcement and civilians who race to take murderers off the streets. Cases include a Meatpacking District disappearance and a murder at the Met.

A woman is found dead in an elevator, but her murder is just the beginning; as Barbara Butcher retraces the chain of evidence, she uncovers a domino effect of violence that leaves a trail of bodies across the Bronx.

A California Granny is thought of as a Mother Teresa to the downtrodden thanks to the boarding house she runs; but when a social worker raises fears for a missing client, investigators find that Granny's carefully tended garden hides horrors.

The mysterious death of a young mother in Ohio and the ensuing investigation that spans years and multiple states.

When an Oklahoma teen finds her mother and father murdered in their family home, detectives uncover bizarre photos and use new technology to reveal a dynamic duo at the center of the heinous crime.

The abrupt disappearance of a Colorado rancher prompts concerned friends to press investigators to dig up the truth hidden beneath his ranch's calm exterior.

A man disappears after a duck hunting trip in Florida on his sixth wedding anniversary and is later found to have been murdered.

A hardworking family man gets a second chance at love with a woman who has a dark past; soon, the man's family is torn apart by drugs, lies and a treacherous murder plot.

A deep dive into some of the most chilling murder cases in New York City's recent history. New York City is a shining beacon of opportunity for people across the world and a true melting pot. It's a city with a gritty core, where tensions run high. A series of details to the brazen crimes that could only happen in New York and the intense work by law enforcement and civilians who race to take murderers off the streets. Cases include a Meatpacking District disappearance and a murder at the Met.

A woman is found dead in an elevator, but her murder is just the beginning; as Barbara Butcher retraces the chain of evidence, she uncovers a domino effect of violence that leaves a trail of bodies across the Bronx.

A California Granny is thought of as a Mother Teresa to the downtrodden thanks to the boarding house she runs; but when a social worker raises fears for a missing client, investigators find that Granny's carefully tended garden hides horrors.

Criminals are betrayed by the clues their own bodies leave behind.

Detectives track down leads from rival biker clubs and scorned lovers to uncover the truth when a beloved biker is found shot to death in his Pennsylvania apartment.

A former police chief gets into constant conflicts with a young renter who doesn't respect his authority; the war between them intensifies until blood flows down their street.

Criminals are betrayed by the clues their own bodies leave behind.

Complaints about dogs running loose lead to the construction of a fence between two long-time neighbors, but the problem isn't solved and flaring tempers lead to fist fights, stabbings, and ultimately a shocking shootout captured on video.

A former police chief gets into constant conflicts with a young renter who doesn't respect his authority; the war between them intensifies until blood flows down their street.

Criminals are betrayed by the clues their own bodies leave behind.

Detectives track down leads from rival biker clubs and scorned lovers to uncover the truth when a beloved biker is found shot to death in his Pennsylvania apartment.

A murder outside Pleasantville, Iowa, divides a family and forces one man to take the investigation into his own hands.

Criminals are betrayed by the clues their own bodies leave behind.

Complaints about dogs running loose lead to the construction of a fence between two long-time neighbors, but the problem isn't solved and flaring tempers lead to fist fights, stabbings, and ultimately a shocking shootout captured on video.

An Alabama trucker is found shot in his home on the same day his wife is giving birth.

After a woman discovers her brother's brutally beaten body on his bathroom floor, Texas police follow clue after clue and weave together a tale of greed, deception and manipulation.

Key players in the case of Rod Covlin, a New York man who is found guilty of murdering his wife for her $5.3 million fortune and attempting to frame his then-teenage daughter, share their stories.

The larger-than-life owner of a strip club empire is mowed down with a machine gun before the gates of his Orange County estate; the secrecy surrounding the clubs and their employees makes the case extremely challenging for investigators.

A look at the most captivating pop-culture moments, trends and personalities of the decade through interviews with people who studied the time period.

Wrestling heartthrob Terry "Magnum T.A." Allen was destined for worldwide stardom, but one rainy night altered his career and the future of wrestling forever.

A murder outside Pleasantville, Iowa, divides a family and forces one man to take the investigation into his own hands.

An Alabama trucker is found shot in his home on the same day his wife is giving birth.

After a woman discovers her brother's brutally beaten body on his bathroom floor, Texas police follow clue after clue and weave together a tale of greed, deception and manipulation.

Key players in the case of Rod Covlin, a New York man who is found guilty of murdering his wife for her $5.3 million fortune and attempting to frame his then-teenage daughter, share their stories.

The larger-than-life owner of a strip club empire is mowed down with a machine gun before the gates of his Orange County estate; the secrecy surrounding the clubs and their employees makes the case extremely challenging for investigators.

A look at the most captivating pop-culture moments, trends and personalities of the decade through interviews with people who studied the time period.

Wrestling heartthrob Terry "Magnum T.A." Allen was destined for worldwide stardom, but one rainy night altered his career and the future of wrestling forever.

Using technology to solve crime.

As investigators search for the vicious killer of a Navy yeoman in Kitsap, Washington, they come across the troubling realization that the victim may have expected his own demise.

A single woman and her two young sons believe they have found a perfect new apartment, but their overbearing landlord and neighbor soon turns their idyllic situation into a living hell of arguments and intimidation that finally ends in bloodshed.

Using technology to solve crime.

Once-friendly neighbors on a mountain road become sworn enemies after one family calls police about a theft - violating the unspoken tradition of leaving authorities out of disputes; years of conflict finally culminate with shots fired.

A single woman and her two young sons believe they have found a perfect new apartment, but their overbearing landlord and neighbor soon turns their idyllic situation into a living hell of arguments and intimidation that finally ends in bloodshed.

Using technology to solve crime.

As investigators search for the vicious killer of a Navy yeoman in Kitsap, Washington, they come across the troubling realization that the victim may have expected his own demise.

When a young mother disappears after leaving her infant in the care of her local pastor and his wife, Florida detectives search for her for five years, uncovering a web of secrets and lies.

Using technology to solve crime.

Once-friendly neighbors on a mountain road become sworn enemies after one family calls police about a theft - violating the unspoken tradition of leaving authorities out of disputes; years of conflict finally culminate with shots fired.

An elderly woman's body is found dismembered along a rural road, sending Missouri detectives in search of answers.

After a beloved Missouri barfly is found stabbed in his home, detectives spend years chasing down leads until a local pastor reveals a shocking confession from one of his parishioners, revealing a twisted desire and deadly secret kept for years.

When a young woman finds out that her boyfriend might have shot and killed a college football player out of revenge, she struggles with coming forward to officials, fearing she could lose her life.

Detectives search for answers after Annastasia Hester is stabbed to death in Portland, Oregon; investigators uncover personal details that point to multiple suspects and possible motives.

When a Navy officer succumbs to a mysterious illness after months at sea, nothing makes sense, until an autopsy yields a stunning revelation; all roads lead to dead ends, until they zero in on an unlikely target.

When a young mother disappears after leaving her infant in the care of her local pastor and his wife, Florida detectives search for her for five years, uncovering a web of secrets and lies.

An elderly woman's body is found dismembered along a rural road, sending Missouri detectives in search of answers.

After a beloved Missouri barfly is found stabbed in his home, detectives spend years chasing down leads until a local pastor reveals a shocking confession from one of his parishioners, revealing a twisted desire and deadly secret kept for years.

When a young woman finds out that her boyfriend might have shot and killed a college football player out of revenge, she struggles with coming forward to officials, fearing she could lose her life.

Detectives search for answers after Annastasia Hester is stabbed to death in Portland, Oregon; investigators uncover personal details that point to multiple suspects and possible motives.

When a Navy officer succumbs to a mysterious illness after months at sea, nothing makes sense, until an autopsy yields a stunning revelation; all roads lead to dead ends, until they zero in on an unlikely target.

Murder weapons often hold several critical forensic clues about the crime.

When a prominent businessman goes missing, Georgia investigators race against the clock to locate him, uncovering a killer who will go to any lengths necessary to stay hidden.

An Army veteran delivers a parcel to his neighbor, but instead of receiving gratitude, he ignites a war between the two military men that spirals out of control, until the feud finally ends in a hail of bullets.

Murder weapons often hold several critical forensic clues about the crime.

The unofficial mayor of an idyllic suburban street locks horns with the new neighbor who shows no respect for local values; disagreements escalate to arguments, threats, and property damage, ending in brutal violence that shatters two families.

An Army veteran delivers a parcel to his neighbor, but instead of receiving gratitude, he ignites a war between the two military men that spirals out of control, until the feud finally ends in a hail of bullets.

Murder weapons often hold several critical forensic clues about the crime.

When a prominent businessman goes missing, Georgia investigators race against the clock to locate him, uncovering a killer who will go to any lengths necessary to stay hidden.

When a young Army medic based at Ft. Bragg, N.C., goes missing, police can't solve the case despite having a suspect until an unorthodox private investigator steps in to help.

Murder weapons often hold several critical forensic clues about the crime.

The unofficial mayor of an idyllic suburban street locks horns with the new neighbor who shows no respect for local values; disagreements escalate to arguments, threats, and property damage, ending in brutal violence that shatters two families.

Dallas detectives are led on an international manhunt after a young dentist is shot to death at her apartment complex, leaving a trail of surveillance evidence and a deep conspiracy of lies.

After small-town newlyweds are found gunned down next to their car, Georgia detectives start a multistate investigation and discover just how far a criminal trio will go to prove itself.

When Ohio mother Heather Bogle goes missing, a detective identifies multiple suspects, until he himself comes under scrutiny for his investigation.

25-year-old Chantay Blankinship's remains are found at a rundown building that locals call the Haunted House; for Blayne Alexander, this case juxtaposes two places that represent good and evil, a church and an abandoned farmhouse.

When devoted young mother Sara Summer vanishes from a small Tennessee town, the investigation into her life exposes a world of romance, lies and a fatal betrayal at the hands of a man she trusted.

When a young Army medic based at Ft. Bragg, N.C., goes missing, police can't solve the case despite having a suspect until an unorthodox private investigator steps in to help.

Dallas detectives are led on an international manhunt after a young dentist is shot to death at her apartment complex, leaving a trail of surveillance evidence and a deep conspiracy of lies.

After small-town newlyweds are found gunned down next to their car, Georgia detectives start a multistate investigation and discover just how far a criminal trio will go to prove itself.

When Ohio mother Heather Bogle goes missing, a detective identifies multiple suspects, until he himself comes under scrutiny for his investigation.

25-year-old Chantay Blankinship's remains are found at a rundown building that locals call the Haunted House; for Blayne Alexander, this case juxtaposes two places that represent good and evil, a church and an abandoned farmhouse.

When devoted young mother Sara Summer vanishes from a small Tennessee town, the investigation into her life exposes a world of romance, lies and a fatal betrayal at the hands of a man she trusted.

Killers attempt to use the elements to cover their crimes.

Oklahoma detectives must untangle a twisted love triangle to discover the truth after a young man is shot in his own home.

The mountain road between them fails to keep two long-time neighbors from tormenting each other; seemingly small events bring their decadeslong hostility to a bloody boil, and property lines become battle lines in a fight to the death.

Killers attempt to use the elements to cover their crimes.

An apartment-dwelling family finds their peace and quiet shattered when a loud neighbor moves into the unit directly overhead; the conflict engulfs both sides resulting in flying fists, drawn weapons, and a man left bleeding out in the hallway.

The mountain road between them fails to keep two long-time neighbors from tormenting each other; seemingly small events bring their decadeslong hostility to a bloody boil, and property lines become battle lines in a fight to the death.

Killers attempt to use the elements to cover their crimes.

Oklahoma detectives must untangle a twisted love triangle to discover the truth after a young man is shot in his own home.

A former marine who once was the hero for a woman in an abusive marriage may have let his desire to help go too far.

Killers attempt to use the elements to cover their crimes.

An apartment-dwelling family finds their peace and quiet shattered when a loud neighbor moves into the unit directly overhead; the conflict engulfs both sides resulting in flying fists, drawn weapons, and a man left bleeding out in the hallway.

An ordinary August day turns into a nightmare for the Bakersfield community when a local father is found murdered in a field; police are led down an unusual trail of evidence, leading to a killer caught on camera.

When a young, father-to-be is found murdered in his front yard in Florida, investigators chase down multiple leads and track a trail of deceit to bring a jealous killer to justice.

Two young girls in Washington are snatched in broad daylight while riding their bikes; the case goes unsolved for decades, until a new detective with a local connection to the story tries to solve the mystery.

After evidence of a violent attack is discovered in a West Virginia home, the body of a beloved photojournalist is found in the woods; the search for the killer reveals a sordid affair and a murder-for-hire plot with a shocking co-conspirator.

The investigation of a young gamer's murder begins with his mother's heartbreaking 911 call but when detectives find a clue inside evidence left at the crime scene, the case turns into a multi-state search for a heartbroken suspect.

After a psychic dream leads detectives in Florida to the body of a missing nurse, the ensuing investigation uncovers a series of brutal betrayals exposing a vengeful killer fueled by jealousy.

A former marine who once was the hero for a woman in an abusive marriage may have let his desire to help go too far.

An ordinary August day turns into a nightmare for the Bakersfield community when a local father is found murdered in a field; police are led down an unusual trail of evidence, leading to a killer caught on camera.

When a young, father-to-be is found murdered in his front yard in Florida, investigators chase down multiple leads and track a trail of deceit to bring a jealous killer to justice.

Two young girls in Washington are snatched in broad daylight while riding their bikes; the case goes unsolved for decades, until a new detective with a local connection to the story tries to solve the mystery.

After evidence of a violent attack is discovered in a West Virginia home, the body of a beloved photojournalist is found in the woods; the search for the killer reveals a sordid affair and a murder-for-hire plot with a shocking co-conspirator.

The investigation of a young gamer's murder begins with his mother's heartbreaking 911 call but when detectives find a clue inside evidence left at the crime scene, the case turns into a multi-state search for a heartbroken suspect.

After a psychic dream leads detectives in Florida to the body of a missing nurse, the ensuing investigation uncovers a series of brutal betrayals exposing a vengeful killer fueled by jealousy.

The body of a teen is found at a local party spot and theories surrounding her death spread, but the case goes cold for 30 years, until the investigation heats back up.

Authorities are puzzled when a beloved Georgia grandmother is shot execution style, but as the investigation unfolds, a once close-knit family turns against itself.

After leads dry up in a missing person case, detectives in Ennis,Texas, discover a severed body part at a nearby lake; after confirming the DNA match, they begin to uncover the rippling relationship that led to the death of a beloved father.

After the deceased body of a St. Petersburg, Fla., woman is found in an abandoned trailer, investigators search for answers and uncover the dark truth of what happens when someone is pushed too far.

Investigating a series of fires in California's Sam Joaquin Valley that killed four, investigators determine a respected arson investigator may be the arsonist.

Investigators work to solve a double homicide in the small town of Hudson, Wisc.

The body of a teen is found at a local party spot and theories surrounding her death spread, but the case goes cold for 30 years, until the investigation heats back up.

Authorities are puzzled when a beloved Georgia grandmother is shot execution style, but as the investigation unfolds, a once close-knit family turns against itself.

After leads dry up in a missing person case, detectives in Ennis,Texas, discover a severed body part at a nearby lake; after confirming the DNA match, they begin to uncover the rippling relationship that led to the death of a beloved father.

After the deceased body of a St. Petersburg, Fla., woman is found in an abandoned trailer, investigators search for answers and uncover the dark truth of what happens when someone is pushed too far.

When a killer tries to use the chaos of one of New York's worst weather catastrophes to get away with murder, detectives in Far Rockaway, Queens fight through Mother Nature's wrath, uncovering a plot of lust, jealousy and, ultimately, betrayal.

When a Bronx businessman is gunned down at a drive-through, detectives look back into the series of vicious attackson the familythat led up to the murder. A trail of text messages leads to ashockingperpetrator nobody ever could have imagined.

When a prince and princess are found murdered in their Park Avenue apartment, detectives discover both their lives and deaths are shrouded in mystery and deception; a surprise confession leads to more carnage than police ever could've imagined.

When a beloved Staten Island mother vanishes, NYPD detectives have a gut feeling she didn't run off and have trouble believing she abandoned her family; as they retrace her last known whereabouts, CCTV footage leads them to a horrific discovery.

A retired veteran sells a piece of his land to a young family; a modern day Hatfield McCoy feud ensues.

With Miranda on her tail and the FBI closing in, Cassie enlists Max in a plan that involves breaking and entering, computer fraud and too much vodka; Annie is forced to repay an ominous favor to a client; Megan's secrets threaten to come to light.

Reeling from a fallout with Annie, Cassie brings Buckley along for an alcohol-fueled escapade that ends in a meltdown; Megan embarks on a clandestine mission; amid mounting pressure from her co-conspirators, Miranda continues to hunt Cassie down.

When a killer tries to use the chaos of one of New York's worst weather catastrophes to get away with murder, detectives in Far Rockaway, Queens fight through Mother Nature's wrath, uncovering a plot of lust, jealousy and, ultimately, betrayal.

When a Bronx businessman is gunned down at a drive-through, detectives look back into the series of vicious attackson the familythat led up to the murder. A trail of text messages leads to ashockingperpetrator nobody ever could have imagined.

When a prince and princess are found murdered in their Park Avenue apartment, detectives discover both their lives and deaths are shrouded in mystery and deception; a surprise confession leads to more carnage than police ever could've imagined.

When a beloved Staten Island mother vanishes, NYPD detectives have a gut feeling she didn't run off and have trouble believing she abandoned her family; as they retrace her last known whereabouts, CCTV footage leads them to a horrific discovery.

A retired veteran sells a piece of his land to a young family; a modern day Hatfield McCoy feud ensues.

With Miranda on her tail and the FBI closing in, Cassie enlists Max in a plan that involves breaking and entering, computer fraud and too much vodka; Annie is forced to repay an ominous favor to a client; Megan's secrets threaten to come to light.

Reeling from a fallout with Annie, Cassie brings Buckley along for an alcohol-fueled escapade that ends in a meltdown; Megan embarks on a clandestine mission; amid mounting pressure from her co-conspirators, Miranda continues to hunt Cassie down.

When a young paralegal is discovered bound and stabbed to death in his Lakewood Heights home, Atlanta detectives race to find his killer.

When a tech mogul is found bludgeoned to death in his lavish Roswell bedroom, detectives quickly compile a long list of potential suspects; police ultimately zero in on one scorned lover who wouldn't take no for an answer.

When a cherished Laguna Niguel resident is beaten to death in her home, detectives must peel back the layers of her life to get to the bottom of the murder mystery.

The disappearance of a woman sends her neighbors and loved ones into a tailspin, but the search for answers leads investigators through three states with a dramatic conclusion no one saw coming.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

When a killer tries to use the chaos of one of New York's worst weather catastrophes to get away with murder, detectives in Far Rockaway, Queens fight through Mother Nature's wrath, uncovering a plot of lust, jealousy and, ultimately, betrayal.

When a Bronx businessman is gunned down at a drive-through, detectives look back into the series of vicious attackson the familythat led up to the murder. A trail of text messages leads to ashockingperpetrator nobody ever could have imagined.

When a prince and princess are found murdered in their Park Avenue apartment, detectives discover both their lives and deaths are shrouded in mystery and deception; a surprise confession leads to more carnage than police ever could've imagined.

When a beloved Staten Island mother vanishes, NYPD detectives have a gut feeling she didn't run off and have trouble believing she abandoned her family; as they retrace her last known whereabouts, CCTV footage leads them to a horrific discovery.

Enmity, treachery and gunfire ensue when a man rejects the romantic advances of his next door neighbor.

When a man moves to Canyon Country, Calif., he finds himself embroiled in a bizarre and increasingly acrimonious 8-year feud with a neighbor that terminates with blasts from a shotgun.

A family moves into a Minnesota lake house, then a dispute with a neighbor over water access escalates until it leads to a bloody resolution.

When a young paralegal is discovered bound and stabbed to death in his Lakewood Heights home, Atlanta detectives race to find his killer.

When a tech mogul is found bludgeoned to death in his lavish Roswell bedroom, detectives quickly compile a long list of potential suspects; police ultimately zero in on one scorned lover who wouldn't take no for an answer.

Serving a 60-year prison sentence, Rebecca Keller reveals chilling new details about the night she stabbed her then-girlfriend's mother more than 70 times; she opens up about her regrets and why she thinks the crime took place.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

When a young paralegal is discovered bound and stabbed to death in his Lakewood Heights home, Atlanta detectives race to find his killer.

When a tech mogul is found bludgeoned to death in his lavish Roswell bedroom, detectives quickly compile a long list of potential suspects; police ultimately zero in on one scorned lover who wouldn't take no for an answer.

Incredible innovations in forensic science are combined with the expertise of the dedicated individuals who see what others can't, to solve the crimes investigated on screen.

The disappearance of a woman sends her neighbors and loved ones into a tailspin, but the search for answers leads investigators through three states with a dramatic conclusion no one saw coming.

Serving a 60-year prison sentence, Rebecca Keller reveals chilling new details about the night she stabbed her then-girlfriend's mother more than 70 times; she opens up about her regrets and why she thinks the crime took place.

In fall 1991, Toronto was paralyzed by the story of a missing six-year-old girl found raped and murdered in the boiler room of her apartment building; with four suspects, CSIs turned to the brand-new science of DNA to catch the killer.

When the body of a young man is discovered burned beyond recognition, Alabama authorities sift through evidence to track down the unlikely couple at the center of this heinous crime.

A long-time resident of a suburban street descends into a morass of delusion, anger and paranoia that turns him against innocent neighbors; he eventually becomes wholly unhinged and unleashes his violent wrath upon his small Baltimore community.

In fall 1991, Toronto was paralyzed by the story of a missing six-year-old girl found raped and murdered in the boiler room of her apartment building; with four suspects, CSIs turned to the brand-new science of DNA to catch the killer.

A friendly retired couple delights a family with young children when they move in next door. Then the new neighbors' dog attacks the children's mother, setting off a vicious conflict that ends in two shocking murders.

A long-time resident of a suburban street descends into a morass of delusion, anger and paranoia that turns him against innocent neighbors; he eventually becomes wholly unhinged and unleashes his violent wrath upon his small Baltimore community.

In fall 1991, Toronto was paralyzed by the story of a missing six-year-old girl found raped and murdered in the boiler room of her apartment building; with four suspects, CSIs turned to the brand-new science of DNA to catch the killer.

When the body of a young man is discovered burned beyond recognition, Alabama authorities sift through evidence to track down the unlikely couple at the center of this heinous crime.

Mexican drug lord El Chapo evades authorities for over a decade, but one man is determined to catch the kingpin; former DEA agent Andrew Hogan comes out of the shadows to detail his search and capture with never-before-seen videos and photographs.

In fall 1991, Toronto was paralyzed by the story of a missing six-year-old girl found raped and murdered in the boiler room of her apartment building; with four suspects, CSIs turned to the brand-new science of DNA to catch the killer.

A friendly retired couple delights a family with young children when they move in next door. Then the new neighbors' dog attacks the children's mother, setting off a vicious conflict that ends in two shocking murders.

A beloved pediatric doctor is beaten and drowned in his own home; when detectives surveil a suspect, the waters are muddied by lies, suspects on the run, and an international manhunt.

All leads run dry after a former film star is found shot to death in his home, but as investigators continue hunting down a suspect, they learn that this Hollywood drama has more twists and turns than any blockbuster hit.