The TARDIS lands near an isolated rocky island lighthouse just after a comet strikes the nearby sea and a sudden chilling fog rolls in. Soon after, electrical problems take hold of the generator and one of the keepers dies mysteriously.
In Victorian times, the Doctor and Leela arrive on Fang Rock, an isolated crag where something starts killing the local lighthouse keepers. Simple, dark and very atmospheric drama, perhaps inspired by fanciful stories which followed the tragic loss of three lighthouse workers in 1900, on Eilean Mor in the remote Flannan Isles of Northwest Scotland.—no2-10