Retired detective Kim Mager reflects on her dangerous 33-hour interrogation of Ohio serial killer Shawn Grate, whose confessions shocked her town.

Edna Cowell Martin reflects on her bond with cousin Ted Bundy, initially charmed by his charisma. Unaware of his dark deeds, her perception shattered upon his arrest. In her new book, she shares her shock and grief, offering a personal view of Bundy's impact on their family.

Frank Figliuzzi, former FBI assistant director for counterintelligence, on his book 'Long Haul: Hunting the Highway Serial Killers' on how murders by truckers have changed over the years.

In the 2000s, the New Mexico desert became a graveyard for 11 females and an unborn child--their lives taken by a serial killer who became known as The West Mesa Bone Collector. His victims' stories echo for justice.

We speak to Katherine Ramsland, an author and professor of forensic psychology, who unravels Elmer Wayne Henley Jr.'s unsettling involvement with Houston serial killer Dean Corll in her book 'The Serial Killer's Apprentice.'

Rodney Alcala, also known as the 'Dating Game Killer' isn't the only killer, or even serial killer, to go on a game show. Experts speak about why some killers wanted to compete on TV.

In 2006, four sex workers were found dumped in a ditch near Atlantic City's border. The serial killer has yet to be identified.

Jung Yoo-jung, a 23-year-old true crime fan, killed a female tutor in South Korea. Her motive? She was curious about what it would be like to murder someone.

Journalist Bob Cyphers on the decades-long search for the unidentified serial killer and what's made the process of identifying him so hard.

Jana Monroe, one of the FBI's first female agents with the Behavioral Science Unit, on what it was like interviewing serial killers.