From the director of Poltergeist and co-writer of Alien comes a thrilling sci-fi adventure of explosive action and pulse-pounding suspense. With mind-blowing special effects by Oscar winner John Dykstra, Lifeforce is a sci-fi extravaganza that delivers out-of-this-world excitement. A mission to investigate Halley's Comet discovers an even more fascinating phenomenon: an alien spacecraft! After a deadly confrontation, the aliens travel to Earth, where their seductive leader (Mathilda May) begins a terrifying campaign to drain the life force of everyone she encounters. Her victims, in turn, continue the cycle, and soon the entire planet is in mortal danger. And when the mission's sole survivor (Steve Railsback) sets out to destroy her, he comes face to face with the most charming and horrifying being he's ever known. Will he be able to destroy the lovely vampiress... or will he become yet another victim of her fatal charm?