It is the turn of the century, and the tardis materialises by a lighthouse on the desolate isle of Fang Rock. When the engineer dies in mysterious circumstances, the remaining crew blame the mythical Beast of Fang Rock - until the Doctor and Leela turn up...
When a small clippper runs aground on the crags of Fang Rock the lighthouse offers shelter to its desperate passengers. But the Doctor soon discovers clues that suggest that no one is safe on the tiny island.
Whilst a private drama unfolds between the survivors of the wrecked clipper, another death occurs. The Doctor suspects a ruthless alien lurks in the thick unnatural fog around the island and secures the lighthouse. But has he really locked the horror out, or is it somewhere inside with them...?
Originally transmitted 3rd-24th September 1977, this gripping story kicked off Tom Baker's fourth season as the Doctor. Produced by Graham Williams, Directed by Paddy Russell.
DVD Extras: Commentary with Louise Jameson and John Abbot, and Terrance Dicks.
Terrance Dicks: Fact & Fiction (dur. 36' 04) - an overview of Terrance Dicks' career as writer, script editor and novelist. Featuring contributions from Terrance Dicks, Barry Letts, Christopher Barry, Louis Marks, Eric Saward, Paul Cornell, Peter Darvill-Evans and Brenda Gardner.
Paddy Russell - A Life in Television (dur. 14 mins approx) - An interview with director Paddy Russell, looking back over her four Doctor Who stories.
The Antique Doctor Who Show (dur. 4' 47) - a short 'Antiques Roadshow' style feature. Originally broadcast as part of the programme's thirtieth anniversary celebrations in 1993.