On July 10th, 1969, the crew of a Royal Mail vessel found a trimaran drifting in the open Atlantic, sails up and supplies intact, but the sailor gone. Aboard the Teignmouth Electron were a missing chronometer, a meticulously faked navigation log, and a 25,000-word diary documenting a catastrophic descent into madness. We explore the ultimate locked-room mystery: the life and disappearance of Donald Crowhurst, a struggling engineer who entered a perilous round-the-world race to save his family from bankruptcy.

We trace the 1968 Sunday Times Golden Globe race, Crowhurst's financial desperation, and the rushed, compromised boat that left port fundamentally unready. We unpack his decision to fake his position rather than face death or ruin, the agonizing reverse trigonometry required to fabricate his location, and how his competitors' fates tra ...