This movie is no sci-fi/horror masterpiece by any stretch of the imagination. But it is far better than most of the reviewers on IMDb would have you believe. It was originally released here in the USA on the second half of a double bill with the somewhat better ISLAND OF TERROR with Peter Cushing. I convinced my dad to take me to the drive- in for the bill when it was released, but it was a school night and he wouldn't tumble to staying for the second feature. Since then, it has been notoriously hard to track down. I finally saw it about a year ago and was surprised on how entertaining it was, especially considering how I had read various disparaging things about it in the interim. It does borrow elements from the earlier FLY pictures as well as the Karloff film, THE INVISIBLE RAY, and is by no means particularly original. However, since when does that really detract from the enjoyment factor of a low budget, sci-fi monster film? For the most part, you better resign yourself to that going in, or else stop watching films altogether. In its favor, it does move at a fast pace, has decent actors and color cinematography, some nice grisly shocks and certainly decent effects for a low budget sixties film from England. An added bonus, there is a distinctly assertive heroine scientist played by Mary Peach, a character who remains in possession of her wits, and aggressively intelligent without being obnoxious (her character is the sympathetic colleague of Bryant Halliday who becomes the tragically disfigured, death-dealing PROJECTED MAN) Undeserving of its bad rep.