Scientific investigator Alan Brooks (Forrest Tucker - The Abominable Snowman) is summoned to the remote Alpine village of Trollenberg, following the recent gruesome decapitation of a mountain-climber. En-route he encounters mind-reading sisters Anne and Sarah Pilgrim (Janet Munro and Jennifer Jayne) who follow him to the village. When visiting old friend Professor Crevett (Warren Mitchell - Till Death Us Do Part) at his observatory, Brooks discovers a sinister radioactive cloud below the summit. What is the horrifying alien secret that lurks within the poisonous fog? And why does Anne and her power pose such a threat to it?

Special Features

Bonus Footage, Commentary: John Carpenter (director), Documentaries: 'Jimmy Sangster: Too Modest By Half'; 'Musical Black Magic'; 'Allan Bryce Talks Trollenberg Terror', Image Gallery, Interviews: Brian Johnson (special effects artist), Trailers