In December 1900, the lighthouse on Eilean Mòr in Scotland’s Flannan Isles went dark — and three men vanished without a trace. James Ducat, Thomas Marshall, and Donald McArthur were experienced lighthouse keepers, trained to keep the lamp burning in the worst Atlantic weather. But when the relief vessel arrived days later, the station was eerily abandoned: beds unmade, the clock stopped, the lamp cleaned and ready… and the men gone.

In this long-form episode of Phenomenon — The Home of the Unexplained, we break down the true history of the Flannan Isles lighthouse mystery, including the known timeline, the reported log and slate readings, the dangerous west landing, and the most discussed t ...