Louis Le Prince
The story of Louis Le Prince is a strange one. He invented the first ever motion picture camera and projector in 1888 and wanted to show it to his family. He was on a train to see his family in Paris, but went missing that day in September 1890. No trace of him was ever found afterwards.
A famous American writer, Ambrose Bierce, disappeared in 1931 and was never found. There have been a lot of stories related to his mysterious disappearance, but none is considered authentic.
One of the most mysterious disappearances in the history of mankind was of Percy Fawcett and his son, who went missing in 1925. It is reported that Fawcett had sent a message to his wife about the discovery of a mythical city, but he was not found afterwards.
In 1971, D.B Cooper hijacked a commercial aircraft, took ransom for releasing the passengers and then jumped off the plane with a parachute. He was never seen after that and his disappearance remains a mystery.
The Mary Celeste
Also known as the ghost ship, this merchant vessel disappeared in the 19th century, but was later found with all the valuables. However, no trace of the crew members and the family of Captain Benjamin Briggs was found.
Although the case of Jimmy Hoffa is still unclosed, no evidence related to his mysterious disappearance has been found yet. He had strong connections with criminals, but no one really knows what happened to him.
In 1945, five torpedo trainees went missing in the Bermuda Triangle. When a search plane, carrying 13 men, went to find clues of the trainees, it also disappeared mysteriously and no traces of it have ever been found.