After a meteorite crashes into the English countryside, scientist Jack Costain (John Saxon) and his team set out to investigate. They discover it is actually an alien device from one of Jupiter's moons used to transfer matter to Earth. But what is the connection between the visitor from outer space, a mystery man placing ads in the back pages of bikini magazines and the disappearance of anyone who answers them.
At times this feels like two different films thrown together lurching between Quatermass style extra terrestrial mystery and sleazy Soho-based whodunnit. What should have been either a creepy atmospheric chiller or a campy piece of fun is sunk by the script, which is both confusing and relentlessly talky, and the finished product is teeth-grindingly dull.
John Saxon does his best, heroically managing to sustain an English accent for the duration, and there is some fun to be had watching for cameos from Warren Mitchell as a father of a missing girl, Aubrey Morris as a squalid bookstore owner, and Ballard Berkeley, best known as the Major in Fawlty Towers.