Buried beneath the sprawling Wolf's Lair complex were the skeletons of three adults, a teenager, and a baby — but the details of their macabre deaths are still unclear.

Go inside the chilling story of Peter Madsen, the entrepreneur-turned-murderer who killed Kim Wall aboard his submarine on August 10, 2017.

Once known as the "City of Smoke," Pittsburgh used to produce over half of America's steel. Though the steel industry largely crumbled by the 1980s, the city made an impressive comeback by reinventing itself.

Measuring nearly 14 inches long, the footprints of Fujianipus yingliangi are the largest of their kind — and likely belonged to one of the biggest raptors to ever walk the Earth.

Beginning in 1979, former librarian Marion Stokes privately recorded broadcasts from multiple televisions at once, 24 hours a day, eventually accumulating a startling 71,000 tapes of television history.

First discovered in 1994, the origins of the mysterious "Excalibur" sword found in Valencia, Spain had eluded researchers for 30 years.

A recent examination of the wreckage of the Danish-Norwegian flagship Griffin revealed new information about this top-of-the-line medieval warship and the armaments of its soldiers on board.

When Tomoaki Hamatsu, a.k.a. Nasubi, was cast on the show "Susunu! Denpa Shōnen" in 1998, he had no idea he'd spend the next 15 months of his life naked and isolated in an apartment — or that his ordeal would be broadcast live to 17 million people.

Sometimes referred to as the "greatest lawman of the 20th century," former Texas Ranger Frank Hamer not only took on Bonnie and Clyde but also the KKK and lynch mobs.

Based on similar medieval texts, at least part of the Voynich manuscript could be about "women's secrets."

The remains were found by hikers along the picturesque Dunraven Bay, a popular tourist destination where TV shows like Poldark and Doctor Who have been filmed.