Between 1979 and 1981, at least 28 children and young adults were murdered across Atlanta. Was Wayne Williams their killer?

Aum Shinrikyo was founded in 1980s Japan as a yoga and meditation group, but before long, leader Shoko Asahara pushed the group toward chemical weapons manufacturing and terrorist attacks.

Dubbed "Joel the Ripper," Joel Rifkin terrorized prostitutes in the early 1990s — and became the most prolific serial killer in New York history.

John "Junior" Gotti joined the Mafia in 1988, became the youngest capo in Gambino family history by the time he was 26, took over as acting boss in 1991 — and then walked away from it all.

In 1949, priests performed an exorcism on a boy referred to as "Roland Doe," a.k.a. Ronald Hunkeler, in a chilling ordeal that became the real-life inspiration for The Exorcist.

Technically considered red meat, most accounts say human flesh tastes like pork with a consistency of beef. But this is what the science says.

Because he was black, Navy sailor Doris Miller was relegated to shining officers' shoes, making beds, and serving meals in the kitchen. Then his heroics at Pearl Harbor earned him the Navy Cross.

For decades, scientists offered theories about the fabled sunken continent of Lemuria in the Indian Ocean. But in 2013, researchers finally found evidence that it may have actually existed.

During the Viking's blood eagle torture, victims would have their lungs pulled out of their back to create a pair of "wings" — while they were still alive.

Only living into her mid-20s, Ankhesenamun became the Queen of Egypt during the 18th Dynasty when she married King Tut.

The victim who inspired the AMBER alert system, nine-year-old Amber Hagerman was murdered after being abducted while riding her bike in Arlington, Texas on January 13, 1996.