48 Hours on ID

The shooting death of Russel Douglas goes unsolved until a tipster leads police to former beauty queen Peggy Sue Thomas who will later plead guilty to providing criminal assistance to boyfriend James Huden.

Years after fashion writer Christa Worthington is found murdered in her Truro, Mass., home, DNA evidence points to an unlikely suspect.

After Caryn Kelley shoots her boyfriend, Phillip Peatross, to death in her Orlando, Fla., home, police record a cell-phone video of her explanation.

Catherine Woods goes to New York to chase her dream of dancing on Broadway, then she is stabbed to death in her Upper East Side apartment, and her new boyfriend, Paul Cortez, becomes a suspect in her murder.

Melissa Calusinski was tried and convicted of killing a toddler at a day care center. But now, newly uncovered X-rays of the boy may tell a different story. Was Melissa wrongfully convicted or did the jury get it right? Erin Moriarty reports.

When Forrest Hayes, a successful Google executive died of heroin overdose aboard his yacht, police arrested the woman with him. Was the overdose intentional, as police maintain, or accidental, as her defense team argues? Maureen Maher reports.

Lizzie Marriott, an innocent college student, is lured into a dark world. But when she said "no" twice -she lost her life. Was it murder at the hands of Seth Mazzaglia, a man with a taste for sex and bondage, or was it an accident? Troy Roberts reports.

Tormented by memories of sexual abuse years before, Kristen Cunnane made a life-changing decision to fight back. She went to the police who asked her to call her abuser and get her to confess. But would the sting work? Tracy Smith reports.

Millionaire businessman Dino Guglielmelli is accused of hiring a hit man to kill his wife, Monica Olsen, offering Richard Fuhrman $80,000 to do the deed.

Millionaire businessman Dino Guglielmelli is accused of hiring a hit man to kill his wife, Monica Olsen, offering Richard Fuhrman $80,000 to do the deed.

While admitting she shot her unarmed ex-husband to death, Tracey Grissom claims she was acting in self-defense.

Attorney Catherine Shelton leads a storied life which includes several run-ins with the law, then she becomes mired in an investigation that results in the conviction of her husband for murder.

In 1969, 15-year-old John McCabe is found murdered after failing to return from a dance, and the case goes cold even though his family never gives up on finding his killer, then a big break comes after the passage of more than 40 years.

Twenty-five years after University of Florida student Tiffany Sessions vanished, investigators make a discovery which points to a suspect and leads to the location where she may have been buried.

After aspiring actress Ashley Barnett dies while on a three-day party cruise, her mother searches for answers; George Smith disappears on his honeymoon cruise.

April Barber is shot to death on a beach in Florida, while her husband, Justin, survives his gunshot wounds and reports the incident as a robbery gone wrong.

Crosley Green is convicted of murder and spends 26 years in prison, but two retired sheriff's deputies say critical mistakes were made during the investigation, and new evidence surfaces that may prove Green's innocence.

Alleged serial killer Michael Gargiulo is a suspect in the stabbing death of his neighbor, 18-year-old Tricia Pacaccio, in Glenview Ill.

After Vanessa Mintz is shot to death, detectives find a piece of evidence at the crime scene that will help them solve the case.

After millionaire Gary Triano is killed in an explosion, his ex-wife, Pamela, becomes a suspect along with a host of shady business associates, mobsters and disgruntled investors.