For the last 200 years, the stone has marked the Franco-Belgian border in accordance with an 1820 treaty.

In the early 20th century, Captain Jack Bonavita dazzled crowds with his ability to tame lions — until he was brutally killed by a polar bear.

Two years after April Tinsley was found brutalized in a ditch in rural Indiana, investigators found an ominous confession scratched into a barn wall — but it would be decades before John Miller was finally identified as her killer.

After uploading her DNA to GEDmatch, Christine Marie Salley was matched with the genetic profile of an unknown murder victim from the 1980s.

The former gym teacher shipwrecked on the uninhabited Sardinian island while attempting to sail to Polynesia in 1989 — and decided to stay. But now, the 81-year-old is being forced to leave.

Over the course of just 53 days, Alton Coleman and Debra Brown killed eight people across six states in the American Midwest.

Surtshellir Cave was formed by a volcanic eruption that likely reminded the Vikings of Ragnarök — when the world would be engulfed by flames and the last Norse gods would die.

The 66-year-old civil servant allegedly stopped showing up to work in 2005 and threatened his manager to prevent her from telling on him.

Other apparent victims' remains displayed teeth marks and bones that had been split so the marrow could be sucked out.

When she was just 18 years old, Simone Segouin joined the French Resistance to capture Nazi troops, sabotage German plans, and fight against fascism in her home country.

“It would be possible to make something of it, if not Dolly the Sheep. In general, it will be very interesting.”