Drew Peterson: Stephen Peterson must face up to the terrible truth when his father is accused of murdering his third wife and suspected in the disappearance of his fourth. (S1, ep 1)

Richard Beasley uses a Craigslist ad to lure three men to their deaths.

Chicago mobster Harry 'The Hook' Aleman's daughter, Franky, stands by her father in spite of allegations that he was one of the most feared enforcers for the Chicago Outfit during the 1970s.

Drawn into the Manson Family at age 14, Dianne Lake saw Charles Manson's philosophy turn dark. As the youngest member for two years, she never participated in the murders. She testified for the prosecution and wrote a book about her experiences in 2017.

Teenaged Patti Laurman believes silver-tongued Paul Snider (a Canadian businessman and pimp) when he promises to make her a Playboy model. He said the same thing to his wife, Dorothy Statten, who he has killed. Now, an unsuspecting Patti is in the hands of a killer.

When Sammy "The Bull" Gravano agrees to testify for the government against New York's organized crime bosses, he could never have predicted the effect it would have on the life of his own daughter, Karen.

Classified Ad Rapist: Bobby Joe Long's ex-wife Cindy survived years of abuse at her husband's hands, unaware that he was also attacking dozens of women across Florida.

New. The San Francisco Witch Killers: The daughter of Michael Bear Carson speaks out about her childhood at the hands of her witching-killing dad and his murderous wife Suzan.

Lefty Guns Ruggiero's granddaughter Ramona knows that life isn't like the movies. When her grandfather's life is made into the Hollywood film 'Donnie Brasco', she makes it her mission to set the record straight.

New. William Choyce: William Choyce's ex-wife Alice and daughter Crystal discuss how they survived living with a serial killer as he descended into madness.

The Iceman: The daughters of notorious mafia contract killer Richard Kuklinski reveal all about the lies, misery and fear that dominated their childhood.

Larry Mazza's ex-wife, Christine, is not aware of her husband's true past when they get married; as gangster Greg Scarpa's protege, Larry finds it hard to walk away from the mob even though it threatens to ruin his and Christine's lives.

John Smith: John Smith's third wife Diane couldn't believe her husband murdered his first two spouses. Could the FBI convince her before she became his third victim?

Wayward Wayne: Wayne Adam Ford's brother Rodney has always been the rock in his life. So when his murder spree span out of control, he needed him to stop the madness.

The Tourniquet Killer: Anthony Shore's daughter Tiffany put a stop to her serial killer dad's murder spree when she found the courage to speak the truth.

Dale Hausner's brother Randy lives in fear of a shooter stalking Phoenix at night; when the truth is revealed that the shooter is Randy's own brother, Randy discovers that his brother's darkest secrets are unimaginable.

Brian Hummert's son David is devastated when his mother is found murdered. David is terrified when a serial killer claims responsibility. But as the police investigation picks up steam, David realizes that the truth may be even worse.

Richard Paul White: After years of abuse, Maureen realises something isn't right about her brother. Are the violent tales he tells just stories, or are they something more?

One of Ervil LeBaron's 50 children, Anna grows up in one of the most notorious polygamist cults in American history, and sees no hint of the infamous group's violent lifestyle until it hits too close to home.

Omar Mateen's ex-wife Sitora fights to have her voice heard after Omar kills 49 people in one of the worst mass shootings in US history. She had struggled to break free of his abuse, but his crime drags her back into his world.