The Mystery of the Ghost Blimp
In 1942, a US Navy blimp drifted back to shore in perfect condition but completely empty. Despite the airship being fully functional, its two crewmen had vanished without a trace into the ocean below.
The disappearance of the L-8 remains one of the most bizarre unsolved aviation mysteries. When the blimp finally crashed into a city street, all safety gear and parachutes were still inside, and the radio was working perfectly. Thousands of witnesses watched it hover over California, yet no one saw anyone leave the craft. To this day, the fate of the two pilots remains an absolute blank.
Source: L-8