Watch History's Mysteries Season 4 Episode 6 Online

The rumors have persisted for over fifty years. They have all the trappings of fiction, yet there are those who persist on believing that the U.S. Navy actually rendered a warship invisible and teleported it to and from the Philadelphia Naval Yards in a top-secret project. The True Story of the Philadelphia Experiment chronicles the origins and spread of this tallest of all sailor’s tall tales, revealing how research into anti-submarine technology likely provided the catalyst for the accounts and documenting stages in the story’s development in the pages of pulp fiction.