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.

When a young woman fails to show up to work and her mother rushes to her home to try to find her, what she discovers begins an investigation that leads to a suspect no one imagined.

A woman goes to the police when she's contacted by a professional drummer to kill his partner, but it's unclear if the target is the man's wife or his mistress.

When an unknown body surfaces in the icy East River, Barbara Butcher joins detectives in a race to reconstruct the victim's identity using the few fragile clues left behind; pressure mounts when a report comes in that there may be more victims.

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.

An Army vet is found dead on his farm; it first looks like the tragic suicide of a troubled veteran, but police uncover a sprawling cover-up and two grannies whose dueling stories collide in a troubling she said, she said murder mystery.

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.

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.

When a young woman fails to show up to work and her mother rushes to her home to try to find her, what she discovers begins an investigation that leads to a suspect no one imagined.

A woman goes to the police when she's contacted by a professional drummer to kill his partner, but it's unclear if the target is the man's wife or his mistress.

When an unknown body surfaces in the icy East River, Barbara Butcher joins detectives in a race to reconstruct the victim's identity using the few fragile clues left behind; pressure mounts when a report comes in that there may be more victims.

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.

An Army vet is found dead on his farm; it first looks like the tragic suicide of a troubled veteran, but police uncover a sprawling cover-up and two grannies whose dueling stories collide in a troubling she said, she said murder mystery.

In 1988, motorists discover human body parts dumped along the highway.

The abrupt disappearance of a Henderson, Nev., husband and father of five brings to light accusations of infidelity and cover-ups over a two-year hunt for evidence and truth.

A five-year relationship between neighbors falls apart when one borrows the other's lawnmower and supposedly returns it broken; camaraderie morphs into rage, threats, and physical violence until a bloody murder devastates the community.

In 1988, motorists discover human body parts dumped along the highway.

A retired couple's golden years shatter when a troubled Army veteran moves in next door and makes their lives hell with his appalling behavior; they declare war, fighting vicious battles until one of these neighbors turns up dead.

A five-year relationship between neighbors falls apart when one borrows the other's lawnmower and supposedly returns it broken; camaraderie morphs into rage, threats, and physical violence until a bloody murder devastates the community.

In 1988, motorists discover human body parts dumped along the highway.

The abrupt disappearance of a Henderson, Nev., husband and father of five brings to light accusations of infidelity and cover-ups over a two-year hunt for evidence and truth.

Rapper Meek Mill interview; exploring controversies surrounding the criminal justice system, including the parole system, wrongful convictions, challenges faced by law enforcement, alleged police abuse and more.

In 1988, motorists discover human body parts dumped along the highway.

A retired couple's golden years shatter when a troubled Army veteran moves in next door and makes their lives hell with his appalling behavior; they declare war, fighting vicious battles until one of these neighbors turns up dead.

The sudden and violent death of a young teenage mom in Santa Fe uncovers a love triangle; while detectives have multiple suspects in their grasp, they are taken aback when the true murderer shows up on camera.

After a father's life is tragically cut short in a car accident, the events that follow force Ohio investigators to race against the clock to prevent a murder-for-hire plot before it's too late.

Investigators didn't know if Kathy Heckel was a missing person or murder victim; decades later the case is reopened by a new detective.

Keeping up appearances is key in the OC; the Stahls are found shot to death on the side of the Ortega Highway; the façade turns deadly.

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

Florida became a wrestling mecca for decades under patriarch Eddie Graham and his son Mike, but a series of shocking and unrelenting tragedies threatened to eclipse their legacy.

Rapper Meek Mill interview; exploring controversies surrounding the criminal justice system, including the parole system, wrongful convictions, challenges faced by law enforcement, alleged police abuse and more.

The sudden and violent death of a young teenage mom in Santa Fe uncovers a love triangle; while detectives have multiple suspects in their grasp, they are taken aback when the true murderer shows up on camera.

After a father's life is tragically cut short in a car accident, the events that follow force Ohio investigators to race against the clock to prevent a murder-for-hire plot before it's too late.

Investigators didn't know if Kathy Heckel was a missing person or murder victim; decades later the case is reopened by a new detective.

Keeping up appearances is key in the OC; the Stahls are found shot to death on the side of the Ortega Highway; the façade turns deadly.

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

Florida became a wrestling mecca for decades under patriarch Eddie Graham and his son Mike, but a series of shocking and unrelenting tragedies threatened to eclipse their legacy.

In 1990, Gainesville, Fla., becomes the site of a number of coed murders.

An investigation quickly turns cold in rural Tennessee when the body of a small-town farmer and businessman is found near a trash pile; the case is reopened 25 years later, hoping advances in technology will finally help close this cold case.

A man returns to his hometown after years away; he receives a warm welcome from the residents until the noise from a new neighbor's puppies turns him into a vengeful menace who goes to war with the entire community.

In 1990, Gainesville, Fla., becomes the site of a number of coed murders.

This true-crime series tells the chilling tales of those most unfortunate souls who unwittingly take up residence within a stone's throw of a psycho or killer.

A man returns to his hometown after years away; he receives a warm welcome from the residents until the noise from a new neighbor's puppies turns him into a vengeful menace who goes to war with the entire community.

In 1990, Gainesville, Fla., becomes the site of a number of coed murders.

An investigation quickly turns cold in rural Tennessee when the body of a small-town farmer and businessman is found near a trash pile; the case is reopened 25 years later, hoping advances in technology will finally help close this cold case.

A recent law school graduate in Georgia who has a promising future disappears without a trace.

In 1990, Gainesville, Fla., becomes the site of a number of coed murders.

This true-crime series tells the chilling tales of those most unfortunate souls who unwittingly take up residence within a stone's throw of a psycho or killer.

When a family dispute turns violent and results in the death of an Oregon man, detectives must sort through a cast of characters to uncover the leading lady at the center of the crime.

The case of a beloved Kenosha social worker's murder resurfaces nearly a decade after leads run dry when an odd call from another state reveals the gruesome truth about a vengeful pack of killers.

The murder of a young schoolteacher in Pennsylvania goes unsolved for years, but investigators discover a new tool that may finally help unlock the murderer's identity.

After the wife of a college professor and heir of an oil empire is found murdered in her South Florida home, footage from the home's security camera could hold the key to finding the killer.

A devoted husband, military man, and father of three calls the police with a chilling confession: he's shot his wife; what first appears to be a straightforward homicide soon unravels into something far more complex.

A recent law school graduate in Georgia who has a promising future disappears without a trace.

When a family dispute turns violent and results in the death of an Oregon man, detectives must sort through a cast of characters to uncover the leading lady at the center of the crime.

The case of a beloved Kenosha social worker's murder resurfaces nearly a decade after leads run dry when an odd call from another state reveals the gruesome truth about a vengeful pack of killers.

The murder of a young schoolteacher in Pennsylvania goes unsolved for years, but investigators discover a new tool that may finally help unlock the murderer's identity.

After the wife of a college professor and heir of an oil empire is found murdered in her South Florida home, footage from the home's security camera could hold the key to finding the killer.

A devoted husband, military man, and father of three calls the police with a chilling confession: he's shot his wife; what first appears to be a straightforward homicide soon unravels into something far more complex.

The disappearance of millionaire Frank Black.

When a beloved plastic surgeon and his office manager are gunned down at work, detectives chase down several leads until they uncover one suspect hiding malicious intent.

A peaceful suburb turns upside down when a family learns that the neighbor has kept a secret wife locked in his home for years; things escalate when the family helps her escape with her baby, leading to a bitter feud that ends in terrible bloodshed.

The disappearance of millionaire Frank Black.

After years of a married couple ruling their street, a new neighbor who doesn't abide by them moves in; years of tension fester between the two parties until one is pushed over the edge, resulting in a shocking double-execution.

A peaceful suburb turns upside down when a family learns that the neighbor has kept a secret wife locked in his home for years; things escalate when the family helps her escape with her baby, leading to a bitter feud that ends in terrible bloodshed.

The disappearance of millionaire Frank Black.

When a beloved plastic surgeon and his office manager are gunned down at work, detectives chase down several leads until they uncover one suspect hiding malicious intent.

A father in Hawaii tackles setback after setback in his fight for justice for his murdered daughter.

The disappearance of millionaire Frank Black.

After years of a married couple ruling their street, a new neighbor who doesn't abide by them moves in; years of tension fester between the two parties until one is pushed over the edge, resulting in a shocking double-execution.

The search for a missing boater on Lake Coeur d'Alene turns sinister after a local newspaper uncovers a shocking story, forcing residents of the peaceful lake town to question their neighbors.

A haunting text message leaves the family of a missing young man desperate for answers; as Chicago detectives work through multiple theories, they eventually unearth the shocking truth to his sudden disappearance.

A successful businesswoman and mother of three is found shot in her office; the investigation into her death leaves a family divided.

Authorities take two years and three trials to solve the shooting death of the wife of an FBI agent in the kitchen of her family's Virginia home.

A newly single mother of two vanishes after going on a date with an old high school friend she connected with on Facebook; investigators race against the clock to reveal the true identity of the mystery man.

A father in Hawaii tackles setback after setback in his fight for justice for his murdered daughter.

The search for a missing boater on Lake Coeur d'Alene turns sinister after a local newspaper uncovers a shocking story, forcing residents of the peaceful lake town to question their neighbors.

A haunting text message leaves the family of a missing young man desperate for answers; as Chicago detectives work through multiple theories, they eventually unearth the shocking truth to his sudden disappearance.

A successful businesswoman and mother of three is found shot in her office; the investigation into her death leaves a family divided.

Authorities take two years and three trials to solve the shooting death of the wife of an FBI agent in the kitchen of her family's Virginia home.

A newly single mother of two vanishes after going on a date with an old high school friend she connected with on Facebook; investigators race against the clock to reveal the true identity of the mystery man.

CSIs determine that a girl's ex-husband had his parents assassinate her.

After an Air Force pilot is found shot to death in his Ohio home, authorities embark on an international manhunt that spans over a decade to bring the fugitive to justice.

A Baptist pastor moves in next-door to a free-spirited older woman in suburban Las Vegas, leading to years of back and forth accusations of dog theft, intimidation and drug use; once the agitation reaches biblical proportions, retribution is wrought.

CSIs determine that a girl's ex-husband had his parents assassinate her.

The paranoid delusions of one young man compel him to conspire against the unwitting family next door; over a series of months, his deteriorating mental condition escalates into a midnight shooting, which shakes the foundation of the neighborhood.

A Baptist pastor moves in next-door to a free-spirited older woman in suburban Las Vegas, leading to years of back and forth accusations of dog theft, intimidation and drug use; once the agitation reaches biblical proportions, retribution is wrought.

CSIs determine that a girl's ex-husband had his parents assassinate her.

After an Air Force pilot is found shot to death in his Ohio home, authorities embark on an international manhunt that spans over a decade to bring the fugitive to justice.

With six people killed and a city under siege, a retired detective tries to figure out how the killings are linked.

CSIs determine that a girl's ex-husband had his parents assassinate her.

The paranoid delusions of one young man compel him to conspire against the unwitting family next door; over a series of months, his deteriorating mental condition escalates into a midnight shooting, which shakes the foundation of the neighborhood.

Just as detectives investigating the death of an Atlanta based rapper are closing what appears to be a domestic dispute case, they are faced with horrifying evidence planted by the victim seconds before his death.

When a young woman is found mysteriously gunned down off a remote highway, Michigan detectives look into the victim's past for answers, uncovering a scandalous web of infidelity and betrayal.

Two decades after a Jacksonville, Fla., woman goes missing, her son solves the mystery that haunted his childhood.

In the Los Angeles suburbs, a family is brutally attacked in its residence, leaving four dead and a mother clinging to life; as police search for answers, suspicion grows closer to home and unveils a macabre obsession fueled by young love.

He is the serial killer you've never heard of ... until now. In 1973, 22-year-old Doug Gretzler embarked on a cross-country road trip that spiraled into a brutal killing spree. In just three weeks, he and his accomplice, 28-year-old Willie Steelman, murdered 17 people. Their motive? A mystery that has left family members, law enforcement and experts baffled for decades. Drawing from first person interviews and over 500 hours of recorded conversations with Gretzler himself, hear his darkest confessions and the chilling psychology behind his crimes for the very first time.

With six people killed and a city under siege, a retired detective tries to figure out how the killings are linked.

Just as detectives investigating the death of an Atlanta based rapper are closing what appears to be a domestic dispute case, they are faced with horrifying evidence planted by the victim seconds before his death.

When a young woman is found mysteriously gunned down off a remote highway, Michigan detectives look into the victim's past for answers, uncovering a scandalous web of infidelity and betrayal.

Two decades after a Jacksonville, Fla., woman goes missing, her son solves the mystery that haunted his childhood.

In the Los Angeles suburbs, a family is brutally attacked in its residence, leaving four dead and a mother clinging to life; as police search for answers, suspicion grows closer to home and unveils a macabre obsession fueled by young love.

He is the serial killer you've never heard of ... until now. In 1973, 22-year-old Doug Gretzler embarked on a cross-country road trip that spiraled into a brutal killing spree. In just three weeks, he and his accomplice, 28-year-old Willie Steelman, murdered 17 people. Their motive? A mystery that has left family members, law enforcement and experts baffled for decades. Drawing from first person interviews and over 500 hours of recorded conversations with Gretzler himself, hear his darkest confessions and the chilling psychology behind his crimes for the very first time.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if Ron's interest in an alternative religion is connected to his murder.

A bombshell more than a decade after the crime reignites the investigation into the death of Sarah Pagel's mother, who was killed when Sarah was 7.

A look at the case of con man John Meehan, including interviews with his wife and her daughter, his ex-wife, law enforcement officers, and the Los Angeles Times reporter who shined a spotlight on the story.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if Ron's interest in an alternative religion is connected to his murder.

A bombshell more than a decade after the crime reignites the investigation into the death of Sarah Pagel's mother, who was killed when Sarah was 7.

A look at the case of con man John Meehan, including interviews with his wife and her daughter, his ex-wife, law enforcement officers, and the Los Angeles Times reporter who shined a spotlight on the story.

When Jaclyn Martin's life of comfort is jeopardized, she orchestrates the killing of her husband, a beloved neighborhood bar owner.

After a devoted father is found murdered in his home, Indiana investigators learn just how manipulative and deadly a person's envy can be.

After a wrathful killer strikes a small Alaskan village, investigators must untangle a truly twisted romance to find out what led to this rage-filled stabbing.

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

Two neighboring friends turn enemies after a vicious spat; both of their homes burned to the ground.

After moving to a quiet seaside town in Maine, a family experiences a night shattered by a barrage of gunfire.

When Jaclyn Martin's life of comfort is jeopardized, she orchestrates the killing of her husband, a beloved neighborhood bar owner.

After a devoted father is found murdered in his home, Indiana investigators learn just how manipulative and deadly a person's envy can be.

After a wrathful killer strikes a small Alaskan village, investigators must untangle a truly twisted romance to find out what led to this rage-filled stabbing.

When hikers find a 21-year-old UCLA student's body in a Los Angeles-area train tunnel, detectives wonder if Ron's interest in an alternative religion is connected to his murder.

A bombshell more than a decade after the crime reignites the investigation into the death of Sarah Pagel's mother, who was killed when Sarah was 7.

A look at the case of con man John Meehan, including interviews with his wife and her daughter, his ex-wife, law enforcement officers, and the Los Angeles Times reporter who shined a spotlight on the story.

Eleven years after Connecticut mother Donna Palomba is raped in her home, investigators finally track down her attacker; Donna speaks out about the case, including her fight to keep her assailant from walking free.

A love triangle leads to years of stalking, property destruction, threats and murder.

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

Eleven years after Connecticut mother Donna Palomba is raped in her home, investigators finally track down her attacker; Donna speaks out about the case, including her fight to keep her assailant from walking free.

A love triangle leads to years of stalking, property destruction, threats and murder.

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

When the half-dressed, partially frozen body of a Navy veteran is found lying in a ditch, rumors and lies will challenge detectives' efforts to lay bare the truth behind the chilling death.

After a young California father is ambushed on the steps of his own home, Santa Clara detectives uncover a complex murder plot that ultimately leads them to an unexpected mastermind who's been hiding in plain sight all along.

A home invasion turns deadly on Easter night; as Ohio authorities hunt for the assailant, they discover that the attack may not have been as random as first thought.