Ed and Lorraine Warren were famous paranormal investigators, demonologists, and a seemingly happy married couple. Were they also abusers?

During excavations in the foothills of the Bozdağ Mountains, researchers unearthed pots featuring lids inscribed with dog skulls — and containing the headless remains of infants who were buried in what's believed to be a previously unknown religious ritual.

From the booze-guzzling clurichaun to the bloodsucking Abhartach, these Irish folklore creatures paint a fascinating picture of pre-Christian mythology in Ireland.

The Zodiac Killer murdered at least five victims in Northern California between 1968 and 1969 — and we still don't know who he is.

So far, archaeologists have uncovered 139 graves with the remains of both humans and animals, a trove of artifacts, and even evidence of several ship burials.

The 1986 FBI Miami shootout​ left two bank robbers and two agents dead and wounded five others, leading to a wave of changes in FBI training and weaponry that would contribute to the widespread militarization of American law enforcement.

Archaeologists digging at Al-Khazneh, featured in Indiana Jones and the Last Crusade, uncovered an ancient tomb filled with 12 skeletons — and one of them was clutching a vessel that looks remarkably like the Holy Grail depicted in the film.

John Wayne Gacy began performing as Pogo the Clown in the Chicago area in 1975 — right in the middle of his gruesome murder spree.

Thomas Kwan reportedly wanted to kill his mother's partner of 20 years, Patrick O'Hara, over an inheritance dispute — so he injected him with a toxin that caused him to develop necrotizing fasciitis.

Characterized by "dark" fashion, melancholy music, and a tight-knit community, the goth subculture finds beauty in what others might find morbid or depressing.