Dr. Kirk Yeager, the FBI's chief explosives scientist, works to understand bombs, bombers and the conditions that allow them to thrive to prevent future disasters.

A Pennsylvania girl endured a decade of captivity and abuse after being groomed by a trusted security guard. With courage and support, in 2006 she escaped after 10 years and rebuilt her life. She shares her story to raise awareness about grooming tactics and offers hope to others.

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.

In cases of abuse victims killing their abusers, the law grapples with justice. From Francine Hughes' fiery retribution to Gypsy Rose Blanchard's plea for mercy, each case tests the limits of understanding trauma and self-defense.

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.'

Single mom disappears after dating; strange texts follow. Years later, investigators unravel web of deceit, leading to murderer's conviction.

Reporter Philip Eli on his book 'Prescription for Pain' and how a doctor with three decades of experience as a pediatrician and emergency room physician wound up with a life sentence.

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.

The murders of real estate agents Ashley Okland and Beverly Carter reflect a disturbing pattern of real estate industry violence that affects professionals in the field, regardless of age, location and gender.

The convicted killer and father of 12 tortured and sexually abused his children for years, exerting such power that some of them murdered at his command.