What caused five young men to abandon their car and flee into deep snow in the middle of the night?
Two ships and 129 men set out to find the fabled Northwest Passage before disappearing.
Walking off alone into the Canadian wilderness, did a Japanese tourist intend to take her own life?
After his disappearance in 2014, German tourist Lars Mittank became one of the most famous missing persons cases worldwide after his final known movements were captured on CCTV
An Australian airman disappeared without trace shortly after apparently describing an unidentified flying object pursuing him
Do ships and aircraft disappear more frequently in the Bermuda Triangle than other regions of ocean?
When the German inventor of a revolutionary combustion engine went missing, many believed he had been murdered to prevent his invention falling into British hands
Despite the largest manhunt in the history of the Smoky Mountains National Park, no trace of the missing six-year-old has ever been found
One of the world’s leading aviators, Amy Johnson disappeared in strange circumstances after flying off-course in 1941
Hebrideans have long claimed the remote Flannan Isles to be haunted, but what caused the strange disappearance of three lighthouse keepers there in 1900?