"In December 1900, a boat called Hesperus set sail for the island of Eilean Mor, one of the seven islets (also known as the “Seven Hunters”) of the Flannan Isles off the coast of northwestern Scotland. Captain James Harvey was tasked with delivering a relief lighthouse keeper as part of a regular rotation. The journey was delayed a few days by bad weather, and when Harvey and his crew finally arrived, it was clear that something was awry. None of the normal preparations at the landing dock had been made, the flagstaff was bare, and none of the keepers came to greet the Hesperus. The keepers, as it turned out, weren’t on the island at all. All three of them had vanished."
