The officer's murder was investigated by the FBI for more than five decades. And while all of the prime suspects were members of the Ku Klux Klan, no one has ever been charged.

Sam Kean, author of the book 'The Icepick Surgeon,' discusses unethical undertakings done in the name of science, ranging from Nazi 'medical' experiments to the Tuskegee syphilis study to icepick lobotomies.

We speak with Jane Blasio about how she learned she was one of about 200 newborn babies illegally sold through a clinic in McCaysville, Georgia in the 1960s.

A&E True Crime spoke to Zeman about the findings that made him, along with investigative journalist Maury Terry, question the official account that serial killer David Berkowitz acted on his own.

Richard Rogers preyed on gay men he met in bars and clubs, dismembering them and leaving body parts in trash bags strewn alongside roads in three states.

Veggie pizza, canned spaghetti and ice cream are among the last-meal requests from infamous killers. We talk to Ashley Lecker, author of a new book of recipes of some of these final meals, 'The Serial Killer Cookbook.'

A&E True Crime speaks with journalist Jerry Mitchell about his book, Race Against Time: A Reporter Reopens the Unsolved Murder Cases of the Civil Rights Era, about how to handle cold cases, the FBI's harassment of Martin Luther King Jr. and his role in the prosecution of serial killer Felix Vail

The double murder of hitchhikers Vicki Durian and Nancy Santomero in the summer of 1980 shook Pocahontas County, West Virginia. Nearly 40 years later, the Appalachian community is still haunted by the unsolved case, now known as the 'Rainbow Murders.'

In the early 1970s, Rochester, New York was plagued by a series of unsolved child murders. The three victims each had alliterative names and the killings became known as the 'double initial' or 'alphabet' murders. Will the killer or killers ever be found?

In three decades as a forensic psychologist, Dr. Kris Mohandie has met one-on-one with some of the most violent men ever to grab headlines: Joseph Paul Franklin, Herb Mullin, Willie Woods and others. He talks to us about whether violent criminals are born or made.