In the tiny town of Tofield, Canada, in 1977, Septic Tank Sam was discovered on an abandoned farm. His identity and that of the killer still haunt us today.

Valhalla is an important concept of Norse mythology and the religion of the Vikings. What do the Old Norse sources tell us about this place?

Many cultures around the world have been creating elongated skulls for thousands of years, but the exact reasons why are still a mystery.

The case of Blair Adams is a strange unsolved mystery. He said someone was trying to kill him and wound up dead thousands of miles away.

Carl Tanzler was a doctor who was obsessively in love with one of his patients. Shockingly, his love took an unnatural turn after she died.

Queen Elizabeth I of England appeared to be in love with Robert Dudley. Then his wife died suspiciously. Was the Queen responsible?

The home of the Lancelin family in Le Mans, France, became the scene of a savage double-murder by the quiet housemaid duo, the Papin sisters.

Derinkuyu is an excavated underground city in Cappadocia, built thousands of years ago to serve as a refuge during waves of invasions.