When a space mission involving American and British astronauts encounters an alien craft, the humanoids within are brought aboard the shuttle. Back on Earth, one of the extraterrestrials, who appears to be a gorgeous woman (Mathilda May), proceeds. Lifeforce is a British science fiction horror film directed by Tobe Hooper, written by Dan O'Bannon and Don Jakoby, and starring Steve Railsback. Lifeforce: Directed by Tobe Hooper. With Steve Railsback, Peter Firth, Frank Finlay, Mathilda May. A race of space vampires arrives in London and infects. Critic Reviews for Lifeforce · Lifeforce is a dog. · Frequently outlandish and far from profound, it's nonetheless a box-office bomb that, like its horror-maestro. : Lifeforce: Steve Railsback, Mathilda May, Peter Firth, Frank Finlay, Patrick Stewart, Michael Gothard, Nicholas Ball, Aubrey Morris. Lifeforce. (1,)1 h 56 minR. Steve Railsback stars in this frightening journey into the unknown as a mission to investigate Halley's Comet discovers. “Lifeforce” was based on a novel by prolific British author and essayist Colin Wilson called “The Space Vampires,” which, on the awesome cover. A frightening journey into the unknown awaits an Earthbound scout ship when it comes across an alien spacecraft of enormous proportions. Life Force Humic science for healthy life! · Feed materials and additives for healthy nutrition of animals · Fertilizers and other products for plant & soil. LIFEforce is a group of dynamic Chiropractors who have committed to Changing the World.