He served 34 years for the murder of young Bobby Franks. But what happened to Nathan Leopold after he was released?
These heinous killers knew how to leave their mark.
Some think it's a promotional stunt; others, a genuine threat.
What does it feel like to spend 18 years on death row for a crime you didn’t commit? What does it feel like to get out?
Can you crack the code to this baffling cold case?
He was one of France's most prolific executioners, having killed nearly 3,000 souls.
These five notorious murderers had a thirst for blood...
They found the body with a black bag over its head, near an abandoned trunk that reeked of decay.
This is completely terrifying.
In the late 1970s, New York City was terrorized by a deranged killer.
These kids give a whole new meaning to "difficult teenage years."
Some allege that he confessed to the Jack the Ripper murders with his dying breath.
When Emily Dimmock's family finally entered her apartment, they discovered a gruesome sight.
In his own twisted mind, Howard Unruh's killing spree was "justified."
He thought they were sleeping ... until he saw the ants crawling across their bodies.
Barbara and Patricia Grimes were murdered in 1956. New clues have raised hopes the killer might still be caught.
This demented ripper cut a trail of death across the French countryside in 1897, leaving 11 known victims in his wake.
In 1908, Charles Luard found his wife Caroline shot dead at a neighbor's country house.
Are you Facebook friends with someone who fits one of these descriptions?
In the late 1940s, women answered personal ads thinking they would meet the man of their dreams. Instead, they met Raymond Fernandez and Martha Beck.