In November 1973 a secret spy plane, code-named Argo 16, crashed just after takeoff from Venice airport in Italy, killing its crew. Despite an initial conclusion of pilot error, allegations of more sinister causes have refused to go away, and to this day the actual cause of the crash is a mystery.
In 1966, three young women were enjoying a day at the Indiana Dunes State park, then mysteriously vanished. Did they drown or was something more sinister at play?
On December 12th, 1992 Arnold Archambeau and Ruby Bruguier were involved in a car accident. For some unknown reason they both left the scene. Police searched the area but found nothing, three months later Arnold and Ruby's bodies were found in the ditch just 75 feet away. Where had they been that whole time?
In February 1945 farm worker Charlie Walton was brutally murdered in the tiny English village of Lower Quinton. And the manner of the killing suggested something more than just murder...
In the 1990s, a pre-internet called Usenet developed a bit of a spam problem. Hundreds of messages titled Markovian Parallax Denigrate were posted over the course of one day, but decades later something more interesting was discovered about them.
On December 17, 1967 Australian Prime Minister Harold Holt waded into the ocean for a swim while the rest of his party watched from the beach. He disappeared in the waves and was never seen again. Was it an accident, murder, suicide, or a well executed defection?
A New Jersey pastor and his lover were brutally murdered, their bodies found posed in ritualistic fashion beneath a tree. The most shocking crime of early 20th century America culminated in a trial that ended with a fizzle, with several suspects and no obvious answers.