Investigation Discovery

A manhunt ensues when John Blauvelt vanishes -- along with his girlfriend -- after his 22-year-old estranged wife, Cati, is murdered.

In Wisconsin, police pursue a gang in a convoy of stolen luxury cars; in Colorado, a domestic dispute turns deadly as a suspect opens fire on officers; in California, Highway Patrol chases an armed man who has wounded an officer.

A woman vanishes, and her husband calls 911; months later, police find her badly beaten body and make him suspect no. 1; a strange noise in the background of a 911 call leads police to the true killer.

Body Cam features the actual footage of the daily activities of law enforcement officers throughout.

A husband finds his wife slain and calls 911, does he know more than he lets on?; CCTV exposes secrecy and lies; next, after a man dies falling down the stairs, police listen closely to the 911 call.

A woman vanishes, and her husband calls 911; months later, police find her badly beaten body and make him suspect no. 1; a strange noise in the background of a 911 call leads police to the true killer.

Body Cam features the actual footage of the daily activities of law enforcement officers throughout.

A husband finds his wife slain and calls 911, does he know more than he lets on?; CCTV exposes secrecy and lies; next, after a man dies falling down the stairs, police listen closely to the 911 call.

A woman vanishes, and her husband calls 911; months later, police find her badly beaten body and make him suspect no. 1; a strange noise in the background of a 911 call leads police to the true killer.

A road rage incident unravels into a story of obsession and premeditation when Yale graduate student and former National Army Guardsman Kevin Jiang is gunned down in New Haven, Conn.

When a Michigan mother and businesswoman goes missing, her family is convinced she was murdered, but know that without a body or physical evidence, it would be difficult to prove.

A husband finds his wife slain and calls 911, does he know more than he lets on?; CCTV exposes secrecy and lies; next, after a man dies falling down the stairs, police listen closely to the 911 call.

Florida detectives investigate the death of Karen Pannell and the bloody message left behind; a pizza delivery holds a clue to the mystery.

When an ambitious and successful woman is shot dead in the garage of her suburban Texas home, investigators have many suspects to choose from, including her son, her ex-husband, and two admirers.

A small Wisconsin town is devastated by a double homicide when an undertaker and his intern are shot in their office.

Florida detectives investigate the death of Karen Pannell and the bloody message left behind; a pizza delivery holds a clue to the mystery.

When an ambitious and successful woman is shot dead in the garage of her suburban Texas home, investigators have many suspects to choose from, including her son, her ex-husband, and two admirers.

A small Wisconsin town is devastated by a double homicide when an undertaker and his intern are shot in their office.

Florida detectives investigate the death of Karen Pannell and the bloody message left behind; a pizza delivery holds a clue to the mystery.

Fights over land and money divide an eastern Washington family amid allegations of incest, betrayal, and murder.

In 2015, the identification of five family members brutally murdered in their Oklahoma home sends shockwaves through their town and nation.

In November 2016, a 16-year-old girl receives terrifying text messages from an unknown number. Two days later, her mother finds her dead from a gunshot wound. Now, police must send two young teens undercover to try and trap her killer.

A young mother looking for love online meets the man of her dreams; after her baby goes missing on their first date, investigators find themselves in a race against time to catch an elusive predator and untangle their web of lies.

A 25-year-old Macedonian woman with aspirations of stardom moves to Hollywood to pursue her dreams of becoming famous; on February 23, 2018, the blonde-haired, blue-eyed bombshell leaves her apartment and vanishes, never to be seen again.

The sudden disappearance of a 15-year-old high school student sends shockwaves throughout her community; investigators rush to locate the young teen before it's too late.

A teenager's spring break getaway to Myrtle Beach turns into a mystery that grips the nation; sneaking off without her parents' permission, she vanishes into the night, leaving behind a trail of cryptic clues.

A mother brutally murdered in her home, the husband and his bizarre alter ego are in the frame after calling 911; a woman is found dead in a creek after a road accident, her husband calls 911 in a panic.

Examining the Idaho College Murders.

Police engage in a massive manhunt to find a killer on a murder spree of revenge, taking the lives of his girlfriend, cousin, and a man he considers a father figure; once captured, he proclaims that he simply wants to be heard.

Fights over land and money divide an eastern Washington family amid allegations of incest, betrayal, and murder.

Examining the Idaho College Murders.

Police engage in a massive manhunt to find a killer on a murder spree of revenge, taking the lives of his girlfriend, cousin, and a man he considers a father figure; once captured, he proclaims that he simply wants to be heard.

In 2015, the identification of five family members brutally murdered in their Oklahoma home sends shockwaves through their town and nation.

In November 2016, a 16-year-old girl receives terrifying text messages from an unknown number. Two days later, her mother finds her dead from a gunshot wound. Now, police must send two young teens undercover to try and trap her killer.

A young mother looking for love online meets the man of her dreams; after her baby goes missing on their first date, investigators find themselves in a race against time to catch an elusive predator and untangle their web of lies.

A 25-year-old Macedonian woman with aspirations of stardom moves to Hollywood to pursue her dreams of becoming famous; on February 23, 2018, the blonde-haired, blue-eyed bombshell leaves her apartment and vanishes, never to be seen again.

When an ambitious and successful woman is shot dead in the garage of her suburban Texas home, investigators have many suspects to choose from, including her son, her ex-husband, and two admirers.

A small Wisconsin town is devastated by a double homicide when an undertaker and his intern are shot in their office.

A young man is fatally shot in North Carolina, and an investigation into his death reveals a number of people who wanted to see him dead.

When a wealthy businessman falls victim to a car bomb of his own making, investigators have a series of suspects.

A young man is fatally shot in North Carolina, and an investigation into his death reveals a number of people who wanted to see him dead.

When a wealthy businessman falls victim to a car bomb of his own making, investigators have a series of suspects.

A young man is fatally shot in North Carolina, and an investigation into his death reveals a number of people who wanted to see him dead.

In 2010, after a night of hard partying, former Playboy model Paula Sladewski disappears - hours later, her body is found burned beyond recognition in a Miami dumpster; the investigation exposes a volatile relationship and a haunting lack of justice.

Actress Melonie Haller is poised for stardom after appearing in the television series "Welcome Back, Kotter" and a pictorial in the March 1980 edition of Playboy; eager for her next role, she goes to a party in the Hamptons that takes a violent turn.

Jill Ann Spaulding dreams of becoming a Playboy model; however, when she arrives at the mansion, she discovers that fantasy and reality are vastly different; shunned by Hef, Jill writes a tell-all book.

After taking the pageant world by storm, a Playboy cover model gets up close and personal with fans on the phone; as she competes for playmate of the year, an obsessive fan goes a step too far and her entire world comes crashing down.

Elizabeth meets with the Harris family to investigate the tragic loss of their beloved daughter, and sister, Sarah; what was supposed to be a routine dental visit for Sarah turned into a toxic and dangerous relationship with a well-respected surgeon.

When a California teen disappears, the whole town feels on edge; as suspicion turns inward, her closest friends begin to wonder if the danger has been beside them all along, hidden in the familiar faces of classmates with something dark to hide.

Kerissa Fare is thrilled to be September 2000's Playmate of the Month; just as the magazine is about to hit newsstands, a mysterious man from her past becomes a suspect in multiple murders, and investigators want to talk to her.

Elizabeth investigates the troubling case of Kate Ranta, a military wife who found herself in an abusive relationship and battling all the systems that protect abusers.

When a middle schooler vanishes without a trace, suspicion quickly falls on the new circle of older friends she's been spending time with; as family and friends dig deeper, secrets unravel, and the line between loyalty and betrayal starts to blur.

A small town reels when a popular resident vanishes without a trace.

Elizabeth investigates the troubling case of Kate Ranta, a military wife who found herself in an abusive relationship and battling all the systems that protect abusers.

When a middle schooler vanishes without a trace, suspicion quickly falls on the new circle of older friends she's been spending time with; as family and friends dig deeper, secrets unravel, and the line between loyalty and betrayal starts to blur.

As a Playboy Bunny, Jackie Hendrickson is forbidden from fraternizing with her customers; Atlanta plastic surgeon Dr. Warren Brown is impossible to resist, and their illicit affair sets off a deadly chain of events.

In 2010, after a night of hard partying, former Playboy model Paula Sladewski disappears - hours later, her body is found burned beyond recognition in a Miami dumpster; the investigation exposes a volatile relationship and a haunting lack of justice.

Actress Melonie Haller is poised for stardom after appearing in the television series "Welcome Back, Kotter" and a pictorial in the March 1980 edition of Playboy; eager for her next role, she goes to a party in the Hamptons that takes a violent turn.

Jill Ann Spaulding dreams of becoming a Playboy model; however, when she arrives at the mansion, she discovers that fantasy and reality are vastly different; shunned by Hef, Jill writes a tell-all book.

When a middle schooler vanishes without a trace, suspicion quickly falls on the new circle of older friends she's been spending time with; as family and friends dig deeper, secrets unravel, and the line between loyalty and betrayal starts to blur.

When a wealthy businessman falls victim to a car bomb of his own making, investigators have a series of suspects.

Possessed by the spirit of a murder victim, a woman with no psychic abilities names the killer, leading police to a suspect.

Thugs botch multiple kidnapping and murder attempts on their first target, then they accidentally kill their second target before getting any money out of him.

Two brothers murder their friend for his "Magic: The Gathering" cards and decide to use the money they get from selling them to buy the materials to hide the body.

A man ends an affair with his married girlfriend and takes up with a younger woman, prompting his jilted lover to poison his leftovers.

Possessed by the spirit of a murder victim, a woman with no psychic abilities names the killer, leading police to a suspect.

Thugs botch multiple kidnapping and murder attempts on their first target, then they accidentally kill their second target before getting any money out of him.

Two brothers murder their friend for his "Magic: The Gathering" cards and decide to use the money they get from selling them to buy the materials to hide the body.

A man ends an affair with his married girlfriend and takes up with a younger woman, prompting his jilted lover to poison his leftovers.

Possessed by the spirit of a murder victim, a woman with no psychic abilities names the killer, leading police to a suspect.

Thugs botch multiple kidnapping and murder attempts on their first target, then they accidentally kill their second target before getting any money out of him.

Two brothers murder their friend for his "Magic: The Gathering" cards and decide to use the money they get from selling them to buy the materials to hide the body.

A man ends an affair with his married girlfriend and takes up with a younger woman, prompting his jilted lover to poison his leftovers.

When Sarita Anderson begins feeling ill, she thinks it's just the flu at first; she never suspects that the man pretending to love and nurse her back to health is actually the monster responsible.

When George Yzaguirre kills himself in prison, he takes his secrets with him, and his ex-wife, Jennifer Meyer, is left to wonder how many of her memories might hold the keys to unsolved crimes and whether she'll ever know the truth about him.

The story of Morgan Metzer, a woman who fell victim to an elaborate assault and rescue drama orchestrated by her ex-husband.

Faith Green thinks she knows everything about Gregory Green's past when reconnecting with him at her father's church; raised to believe in forgiveness, she gives him a second chance, but his secrets will lead to an unspeakable tragedy.

When police arrest Adam Pennylegion's stepbrother, Dustin Duthie, some people blame steroids, but Adam has noticed Dustin heading down a dark path for years.

Eugene Borg knows that Satan has evil plans for his young son Tyler and spends the subsequent years battling the demons he believes plague his child; a shock comes that proves he may have forever lost the war for his son's soul.

Misty fears her violent, cruel and manipulative brother, Patrick Boggs; his ex-girlfriend Lena once loved him but now fears him too; they both feel lucky to have escaped him with their lives; they suspect that others were not as fortunate.

When Boston police officer John O'Keefe turns up dead in the snow, authorities arrest his girlfriend Karen Read for murder; a bombshell Google search and an anonymous tip point to an alleged conspiracy in Canton.

The murder trial of Karen Read begins and jurors hear testimony from witnesses at the scene where they found John O'Keefe's body; outside the courthouse, Turtleboy advocates for Karen's innocence.

As the trial continues, more details emerge about allegedly sloppy evidence collection, conflicting testimonies, manipulated video footage and baffling DNA results; Karen's team suggests a conspiracy and cover-up are at play.

The jury hears testimony about Karen's alleged affair, scandalous texts, mysterious butt dials and conflicting Google search timestamps; the conflict in Canton grows.

As the trial winds down, experts attempt to recreate John's death, the defense brings in one final witness and closing arguments grip the nation; Karen, emotional after a long haul, anxiously awaits her fate; the jury returns with an unexpected note.