The killer's own defense attorney described him as “the very definition of heartless evil.”

Helltown brings Costa’s “Garden of Horrors” to terrifying life.

This sadistic giant murdered 10 people in the 1960s and 70s.

Though Cullen confessed to 40 murders, some investigators believe he killed as many as 400 people.

He had a disturbing confession to make back in 1982.

Get a fascinating new perspective on the darkness that lives within these violent offenders.

Home of the brave, or home of the depraved?

Go behind bars.

Human remains were found scattered throughout southwestern Florida.

Can these true crime authors crack the notorious unsolved case?

He turned a small patch of land into a garden of horrors.

The FBI described Keyes as one of the most meticulous serial killers in American history.

The weeping killer called the police to tearfully apologize for his crimes...but that didn't stop him from striking again and again.

Cases like the Long Island Serial Killer, from the unsolved to the corrupt.

This serial killer was convicted of 49 murders, though he confessed to at least 71.

Peer into the minds of murderers in this fascinating true crime read.

Elizabeth Kendall and the women impacted by Ted Bundy’s heinous crimes take back control of the narrative.

He's confessed to a staggering 93 murders thus far—and the FBI believes all his confessions are credible.

Amy Ryan plays a mother fighting for answers in the upcoming Netflix movie based on the bestselling true crime book.

Get ready to see the darkest side of humanity.