In a desolate Cornish landscape littered with relics of prehistoric man, the Doctor and Evelyn uncover a catalogue of mysteries.
What is the secret of the fog? Can the moor be haunted by a demonic host of imps? And what is Brigadier Lethbridge-Stewart doing in Pengriffen?
Teaming up with his old friend, the Doctor realises that an ancient conflict is nearing its conclusion - and Lanyon Moor is set to be the final battleground.
Written By: Nicholas Pegg
Directed By: Nicholas Pegg
Colin Baker (The Doctor); Maggie Stables (Evelyn Smythe); Nicholas Courtney (The Brigadier); Susan Jameson (Mrs Moynihan); Barnaby Edwards (Philip Ludgate/Scryfan); Toby Longsworth (Professor Morgan/Sancreda/UNIT Sentry); James Bolam (Sir Archibald Flint); Helen Goldwyn (Nikki Hunter/Pelagia Stamatis/Corporal Croft); Nicholas Pegg (Captain Ashforde)
Number of Discs: 2