Five naval planes disappear in the Bermuda triangle; a search party also vanishes.
Some believe that the 1943 U.S. Navy experimented with making ships disappear.
Former Teamsters union President Jimmy Hoffa disappears in 1975.
An American military plane vanishes without a trace over the Sahara Desert.
Forbidden by authorities, a pilot "accidentally" achieves his dream of flying across the Atlantic.
A U.S. lieutenant disappears after destroying several German observation balloons.
An early turbojet airliner suffers one disaster after another.
Donald Campbell is killed while trying to break the world water speed record. His body is not recovered for decades.
Germans shoot down a civilian plane carrying movie actor Leslie Howard.
A yachtsman sailing around the world alone disappears near the Azores.
A submarine that is the pride of the Russian Navy disappears in the Barents Sea.
A deep-sea trawler disappears in high seas off England's northeast coast.
Pioneering aviator Amelia Earhart and her navigator disappear over the Pacific Ocean.
A pioneering pilot vanishes after parachuting from her plane.
An airship crew tries to survive at the North Pole after a crash.
A British airplane disappears four minutes before it is supposed to land in Santiago, Chile.
An American nuclear submarine disappears.
Some believe that in 1943 the U.S. Navy experimented with making ships disappear.
A pair of explorers vanish while climbing Mount Everest in 1924.
An aircraft wheel adds to the mystery of an Australian pilot who disappeared.
Commander Lionel "Buster" Crabb disappears during a mission to spy on a Russian ship in a British harbor.
A British aristocrat disappears after being accused of murder.
Australia's Prime Minister Harold Holt disappears while swimming at the beach.
A member of the British government walks into the ocean and disappears.
A team of explorers vanishes for two years in Antarctica.
A giant bulk carrier disappears in a tropical storm off Japan in 1980.
Thousands of Polish army officers disappear without record of capture or death.
A successful British spy vanishes in Moscow.
A hijacker jumps out of a passenger jet with $200,000 in cash.
The son of New York's governor disappears in New Guinea.
One of the world's richest men vanishes while his private plane crosses the English Channel.
Russia's last czar and his family disappear during the Russian Revolution.
Employees of Britain's King George V vanish while fighting in World War I.
Three women, each attempting to be the first of their sex to cross the Atlantic, are never seen again.
A state judge and his wife go missing from their Florida beach-resort home.
After being jailed for his role in the world's biggest robbery, Ronald Biggs manages to escape and disappear.
Masked men kidnap one of the world's most celebrated racehorses in 1983.
Three lighthouse keepers disappear without a trace in 1900.
A Southeast Asian entrepreneur vanishes while on a walk.
Crime novelist Agatha Christie goes missing in 1926.
A British airliner drifts off course and crashes in the vast, empty wastes of the Sahara desert.
When a Navy dirigible crashes, its two-man crew is not aboard.
A 1910 steamship becomes stuck on an Alaskan reef, stranding the passengers and crew.
Polar explorer Roald Amundsen disappears while in search of survivors of an airship disaster.
A World War I flying ace vanishes without a trace.
After reporting an unidentified flying object, a pilot and his plane disappear.
A plane carrying King George VI's brother crashes in 1942.
A doomed pilot's diary reveals his tragic end.
A U.S. bomber sets off on a mission to Libya in 1943 and never returns.
A man sailing alone seems to vanish without a trace.
On 27 October 1991, Hurricane Grace battered the entire Eastern Atlantic Seaboard. As 95 mph winds drove massive swells onto shore, hundreds of homes and businesses were damaged or destroyed, while 400 miles offshore, a sword-fishing boat named the Andrea Gail was heading home with a hold full of fish. She was about to be hit by the storm of the century; the mighty north-easter of 1991, when Hurricane Grace collided with a cold front from Canada and a storm from the Great Lakes. Sometime in the middle of the night on 28 October, the Andrea Gail found herself at the centre of that so-called 'Perfect Storm'. She was never seen again.
