In January 1921 a five-masted schooner ran aground off Cape Hatteras with all sails set, food mid-preparation in the galley — and not one of its eleven crewmen ever seen again.

Five children went missing in a Christmas Eve house fire in 1945 — yet the ashes held no remains, and 23 years later a photograph arrived in the mail.

Louis Le Prince filmed the world's first motion pictures in 1888, years before Edison and the Lumières. Two years later he boarded a train to Paris and was never seen again.

In February 1978, five friends left a basketball game in California and were found months later, 70 miles off course on a frozen mountain — one of them had survived for weeks beside food he never touched.

In 1966, two Brazilian technicians were found dead on a hill near Rio de Janeiro, wearing suits, raincoats and lead masks over their eyes — beside a note about capsules and a signal that never came.

Easter Island's wooden tablets carry one of the last undeciphered scripts on Earth — and a 2024 dating study hints it may have been invented with no outside help at all.

In 1908, a clay disc stamped with 241 mysterious signs emerged from a Minoan palace on Crete. It may be the world's first printed text — and no one can read it.

In March 1918 a massive US Navy collier sailed from Barbados toward Baltimore and dissolved into the Atlantic. No SOS, no wreckage, no bodies — the Navy's greatest non-combat loss remains unexplained.

In November 1955 the MV Joyita was found half-submerged and drifting in the South Pacific, five weeks overdue. Her cork-lined hull made her almost unsinkable. So why did everyone aboard leave — and where did they go?

Millions of barren circles freckle the Namib grasslands in an eerily regular pattern. After decades of study, scientists still cannot agree on what makes them.