The Death of Cardinal Beaufort was painted by Sir Joshua Reynolds in 1789 and included a controversial demonic figure — but layers of paint and varnish added after Reynolds' death eventually obscured it.

Maryam Mirsaitova and her father stumbled across bones from a woolly mammoth, a bison, and a third animal that's yet to be identified.

Archaeologists believe that the shark tooth knives were used as weapons or in rituals and not as day-to-day tools for cutting.

The creature appears to be a hodgepodge of at least three species, and was likely displayed in 19th-century sideshows.

Long before author Bram Stoker introduced readers to Dracula in 1897, terrifying reports of real vampires struck fear in the hearts of people around the world.

Go inside the mysterious history of the Holy Grail, from its ancient Celtic roots to its place in medieval Christian legend to its alleged location.

Both living and dead mice have been found atop Andean volcanoes, raising questions of how they got there — and why.

These lesser-known witch hunts across history saw scores of people accused of and executed for being "witches."

Dating to the seventh or eighth century C.E., the tattoo combines the Greek letters chi and rho in an abbreviation for the word "Christ."

Though experts have put forward several theories about what the globster of Simberi Island could have been, no one knows for sure.

James Reyos was convicted of brutally murdering Father Patrick Ryan in December 1981 but has now been exonerated thanks to Harlee and Michael Gerke, two fans of the true crime podcast Crime Junkie.