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?

Extra Features:

• High Definition Blu-ray Presentation
• Uncompressed English DTS-HD Master Audio 2:0
• Audio Commentary with Director John Carpenter
• NEW Jimmy Sangster - Too Modest by Half: Film Historian and Author Jonathan Rigby discusses Screenwriter Jimmy Sangster
• NEW Musical Black Magic: Writer & Author David Huckvale on Composer Stanley Black and the score for The Trollenberg Terror
• NEW Allan Bryce Talks Trollenberg Terror: Dark Side Magazine's Allan Bryce revisits the film 
• Special Effects of Terror: Interview with Special Effects Artist Brian Johnson
• Trailer
• Image Gallery
• Optional English Subtitles