Barbara Butcher, a former New York City death investigator, on what the work entails and which cases have stuck with her decades later.

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.

In 2017, Libby German and Abby Williams were murdered near a trail in Delphi. Journalist Susan Hendricks speaks to us about her book, 'Down the Hill' about the case.

Psychological autopsies, performed by forensic psychologists, are used to try to resolve cases where a murder may be mistaken for a suicide.

Through interviews with sex workers, the rookie cop gathered intel that led to the arrest and conviction of Charles Albright in 1991.

What kinds of cases are usually seen during night court? We speak with legal experts to gain insight into what happens at courts when the sun goes down.

After spending nearly two decades in prison for a crime he didn't commit, the Wisconsin man was exonerated and released. But soon after, he was charged and convicted of the murder of Teresa Halbach.

Munchausen by proxy is more common than you think. Experts reveal the truth behind this form of medical child abuse.

In 1996 at Shenandoah National Park, Lollie Winans and Julie Williams were murdered. The case remains unsolved. Journalist Kathryn Miles believes investigators focused on the wrong man.

Music journalist and author Joel Selvin talks about the mental health issues that derailed the famous rock drummer's life and career.

Author Casey Sherman speaks about Tony Costa's murderous rampage.

Robyn Maharaj, co-author of 'Grilling Dahmer' with Milwaukee detective Patrick Kennedy, tells us about the late detective's experience with the serial killer.

Journalist and author Jeff Guinn on what can be learned from David Koresh and the Waco siege and how an FBI coverup continues to stoke the fires of government distrust three decades later.

Jillian Lauren, author of 'Behold the Monster: Confronting America's Most Prolific Serial Killer,' speaks with A&E about her relationship with Samuel Little, the most prolific serial killer in U.S. history.

Dan and Ron Lafferty's obsession with a fundamentalist fringe group of the Latter-day Saints called the School of Prophets led them to murder their progressive sister-in-law Brenda and her child.

Journalist Brian Joseph tells us why sex trafficking is a complicated problem and how victims are further harmed by public perception and widespread corruption.