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.

Two Altadena, Calif., families fear for their lives when an LAPD cop moves in next door.

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.

Convicted of killing two taxi drivers, Chaz Blackshear returns nine years later to share new details in what led to a brutal double murder; his accomplice and then-girlfriend, Danielle Hudson, reveals her role in the crimes for the first time.

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.

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.

Convicted of killing two taxi drivers, Chaz Blackshear returns nine years later to share new details in what led to a brutal double murder; his accomplice and then-girlfriend, Danielle Hudson, reveals her role in the crimes for the first time.

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

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.

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.

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.

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

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.

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.

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.

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.

An investigation into the disappearance of a devoted father leads Arkansas police to a shocking crime scene, the search for answers reveals gang threats, and a killer that's willing to go to great lengths to escape justice.

When a prominent insurance salesman is gunned down on a country road in Kinston, North Carolina, a 20-year-old secret comes to light and casts a shadow on a killer's flawless reputation.

When an airman from Lee, Maine vanishes only four months into his marriage to a country girl from West Texas, it triggers a multi-agency investigation that exposes a darker side to southern hospitality.

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.

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

An investigation into the disappearance of a devoted father leads Arkansas police to a shocking crime scene, the search for answers reveals gang threats, and a killer that's willing to go to great lengths to escape justice.

When a prominent insurance salesman is gunned down on a country road in Kinston, North Carolina, a 20-year-old secret comes to light and casts a shadow on a killer's flawless reputation.

When an airman from Lee, Maine vanishes only four months into his marriage to a country girl from West Texas, it triggers a multi-agency investigation that exposes a darker side to southern hospitality.

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

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.

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.

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.

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.

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.

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

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

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

An in-depth look at the journalists who exposed the dangers of cult leader Reverend Jim Jones; interviews with witnesses to murders carried out by Jones' followers.

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.

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

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

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

An in-depth look at the journalists who exposed the dangers of cult leader Reverend Jim Jones; interviews with witnesses to murders carried out by Jones' followers.

When a small-town preacher is hospitalized with a mysterious illness, North Carolina police uncover a string of suspicious deaths centered around a Burlington woman who has a hidden dark side.

The peaceful life of a retired North Carolina couple is shattered when a husband's body is found in his own garage, leaving investigators to sort out fact from fiction with the help of his wife.

After a bizarre account of suspected false identity is reported, authorities uncover a long history of an evasive criminal and launch a nationwide hunt to catch a killer who uses Southern charm as a weapon of deception.

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.

In Elyria, Ohio, two neighboring families live in harmony for decades, then their friendly coexistence devolves into acrimony, accusations and violence.

When a small-town preacher is hospitalized with a mysterious illness, North Carolina police uncover a string of suspicious deaths centered around a Burlington woman who has a hidden dark side.

The peaceful life of a retired North Carolina couple is shattered when a husband's body is found in his own garage, leaving investigators to sort out fact from fiction with the help of his wife.

After a bizarre account of suspected false identity is reported, authorities uncover a long history of an evasive criminal and launch a nationwide hunt to catch a killer who uses Southern charm as a weapon of deception.

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.

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

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

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

An in-depth look at the journalists who exposed the dangers of cult leader Reverend Jim Jones; interviews with witnesses to murders carried out by Jones' followers.

A popular high school student is found murdered in her bed; two students help police solve the case.

A murder case considered closed by North Dakota detectives is suddenly reopened when a confidential informant comes forward with a tip about an unlikely suspect.

When a soldier who just returned from Afghanistan is gunned down on the side of the road in Kentucky; detectives quickly uncover a secret that could solve the case.

When a young woman is found dead near a soccer field in Indiana, detectives try to piece together a puzzle that leads them to an unexpected suspect.

A young woman's murder remains unsolved until someone comes forward to reveal her own harrowing story.

A popular high school student is found murdered in her bed; two students help police solve the case.

A murder case considered closed by North Dakota detectives is suddenly reopened when a confidential informant comes forward with a tip about an unlikely suspect.

When a soldier who just returned from Afghanistan is gunned down on the side of the road in Kentucky; detectives quickly uncover a secret that could solve the case.

When a young woman is found dead near a soccer field in Indiana, detectives try to piece together a puzzle that leads them to an unexpected suspect.

A young woman's murder remains unsolved until someone comes forward to reveal her own harrowing story.

After a hardworking mother is trapped and killed in a California house fire, investigators sift through multiple theories to figure out who could have ignited the deadly blaze.

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.

A family man is gunned down on the side of the road in a small town in Texas, and detectives unearth a perpetrator who's hiding more than one shocking skeleton in the closet.

When family members fall ill from deadly poison found in their soda, investigators turn their attention to the quiet couple who live next door.

A couple moves to an idyllic California beach town and hits it off with their new neighbors, then one of the wives descends into drugs and madness, terrorizing the other.

When neighbors stand up to a bully after his dog bites their son, a grudge he's been nursing for decades finally explodes into a frenzy of violence.

After a hardworking mother is trapped and killed in a California house fire, investigators sift through multiple theories to figure out who could have ignited the deadly blaze.

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.

A family man is gunned down on the side of the road in a small town in Texas, and detectives unearth a perpetrator who's hiding more than one shocking skeleton in the closet.

A popular high school student is found murdered in her bed; two students help police solve the case.

A murder case considered closed by North Dakota detectives is suddenly reopened when a confidential informant comes forward with a tip about an unlikely suspect.

When a soldier who just returned from Afghanistan is gunned down on the side of the road in Kentucky; detectives quickly uncover a secret that could solve the case.

When a young woman is found dead near a soccer field in Indiana, detectives try to piece together a puzzle that leads them to an unexpected suspect.

A young woman's murder remains unsolved until someone comes forward to reveal her own harrowing story.

The parents of a missing South Carolina woman speak out about her disappearance.

When two tragic deaths occur within one week of each other in a wealthy city in California, families begin to wonder what happened inside a beachfront mansion.

Michele and Lloyd Neurauter were devoted to their three daughters, even after divorce; when Michele is found dead in her home, police suspect suicide, but then they uncover a deadly betrayal too twisted to be true.

A soon-to-be bride is caught in the middle of a twisted murder plot that has detectives questioning if she played a role in it.

When the mysterious death of a 23-year-old mother in New Mexico goes unsolved, her family searches for answers.

The parents of a missing South Carolina woman speak out about her disappearance.

When two tragic deaths occur within one week of each other in a wealthy city in California, families begin to wonder what happened inside a beachfront mansion.

Michele and Lloyd Neurauter were devoted to their three daughters, even after divorce; when Michele is found dead in her home, police suspect suicide, but then they uncover a deadly betrayal too twisted to be true.

A soon-to-be bride is caught in the middle of a twisted murder plot that has detectives questioning if she played a role in it.

When the mysterious death of a 23-year-old mother in New Mexico goes unsolved, her family searches for answers.

Small town McNeil, Ark., is grief-stricken after a retired sheriff is suddenly shot to death; when the case appears to be closed, a killer strikes again, and another local hero is struck down.

When a beloved grandfather in Federal Heights, Colo., vanishes without a trace, the ensuing investigation exposes disturbing secrets that were lurking behind closed doors as police body cam footage reveals the deadly truth.

Sleepy Seadrift, Texas, is unnerved by the death of a local landscaper after evidence at the scene of an apparent hit-and-run points to a deceptive killer with a dangerous past.

When a freewheeling family moves from California to the conservative enclave of Leesburg, Va., they get on the wrong side of one of their neighbors, and the conflict escalates until bullets fly and blood flows in the street.

Seeking to make a fresh start in Las Vegas, a teacher and her son find themselves the targets of harassment and escalating intimidation by the woman who lives next door.

In Vancouver, Wash., a young couple's neighbor violates the strict codes of community conduct in their housing development.

Small town McNeil, Ark., is grief-stricken after a retired sheriff is suddenly shot to death; when the case appears to be closed, a killer strikes again, and another local hero is struck down.

When a beloved grandfather in Federal Heights, Colo., vanishes without a trace, the ensuing investigation exposes disturbing secrets that were lurking behind closed doors as police body cam footage reveals the deadly truth.

Sleepy Seadrift, Texas, is unnerved by the death of a local landscaper after evidence at the scene of an apparent hit-and-run points to a deceptive killer with a dangerous past.

The parents of a missing South Carolina woman speak out about her disappearance.

When two tragic deaths occur within one week of each other in a wealthy city in California, families begin to wonder what happened inside a beachfront mansion.

Michele and Lloyd Neurauter were devoted to their three daughters, even after divorce; when Michele is found dead in her home, police suspect suicide, but then they uncover a deadly betrayal too twisted to be true.

A soon-to-be bride is caught in the middle of a twisted murder plot that has detectives questioning if she played a role in it.

When the mysterious death of a 23-year-old mother in New Mexico goes unsolved, her family searches for answers.

When a hard-charging boss in Arizona is shot to death, police uncover a complex web of bruised egos in his professional life and a trail of broken hearts in his personal life.

The homicide of private first class soldier and young mother Karlyn Ramirez; a glimpse into the FBI's crime lab and an in-depth look at how multiple agencies uncovered a plot that spanned several states and prompted suspicions of espionage.

Years after the kidnapping of Amanda Lindhout, secret agents put a daring undercover sting into action.

A teenager is convicted of encouraging her boyfriend to kill himself; exclusive interviews with those on both sides of the case.

The friends of a father from Georgia accused of murdering his ex-wife come together to prove he is innocent, while prosecutors count on his young children to testify against him.

When a hard-charging boss in Arizona is shot to death, police uncover a complex web of bruised egos in his professional life and a trail of broken hearts in his personal life.

The homicide of private first class soldier and young mother Karlyn Ramirez; a glimpse into the FBI's crime lab and an in-depth look at how multiple agencies uncovered a plot that spanned several states and prompted suspicions of espionage.

Years after the kidnapping of Amanda Lindhout, secret agents put a daring undercover sting into action.

A teenager is convicted of encouraging her boyfriend to kill himself; exclusive interviews with those on both sides of the case.

The friends of a father from Georgia accused of murdering his ex-wife come together to prove he is innocent, while prosecutors count on his young children to testify against him.

The deadly beating of a young man in West Liberty, Iowa, sits unsolved for 25 years, until cold case detectives are approached by an unexpected witness.

A former ladies' man has a change of heart when he falls for a pious day care worker, but when his body is found floating in a creek, detectives discover there's more to their relationship than meets the eye.

The American dream of a hard-working immigrant is cut short when he is violently murdered with a hatchet in the streets of a Las Vegas suburb; investigators sift through lies and follow a bloody trail to uncover the shocking truth.