The film Lifeforce is to Colin Wilson's original book The Space Vampires, much what Blade Runner is to Do Androids Dream of Electric Sheep; Which is on nodding terms at best. Both are good books but the films only represent a small aspect of the plots all be it the aspects that are the most cinematic. Talking of which, this version of the movie poster just nails it for me. Like anyone would have walked past that in 1985 and not gone in to check the movie out. I know I didn't.