Lifeforce

When a space shuttle crew finds a mysterious spacecraft containing three human-looking creatures in a state of suspended animation, they bring them back to Earth for further investigation. It's only then that scientists discover that they are in fact a race of space vampires that feed off people's life-force rather than their blood. So when they escape and run amok in London, the consequences are apocalyptic - and the shuttle crew's only survivor (Steve Railsback) seems to be the only man who can stop them. (Arrow Films)