Lifeforce

A joint British and American space mission sets out to investigate Haley's Comet and discovers an alien spacecraft inside the rock mass with dead aliens and humans aboard. A few of the humans are brought aboard the astronaut’s ship and it returns to earth. The humans are revealed to be vampires who kill the entire crew except for Carlsen (Steve Railsback) before landing in London. The beautiful leader of the aliens (Mathilda May) begins wreaking havoc in the city by draining peoples “life force” and making them capable of doing the same to others. Carlsen teams up with Major Caine of the SAS (Peter Firth) to defeat the vampires.