Why did American aviatrix Amelia Earhart suddenly disappear over the Central Pacific on the final leg of her round-the-world flight in 1937? What caused the death of Britain's aviation heroine Amy Johnson in 1941? What really lay behind the fatal flying boat crash that claimed the life of the Duke of Kent in 1942? Famous bandleader Glenn Miller disappeared on a flight to Paris in 1944. Investigators believe they may have pinpointed the location of the wreckage of his aircraft in the English Channel, but what makes them so sure? Not only has the author drawn upon hitherto undisclosed public records and tracked down new witnesses to these events, but he has also been closely involved in surface and underwater explorations concerning these mysteries. The author also examines the work of the RAF Sub Aqua Association, who undertake the exciting but dangerous dives to investigate aircraft wrecks.