The scientists discover that Carroon has been infected by an alien organism. It makes him lethal to others who come into contact with him, which is quite a problem as he has escaped hospital and is now loose on the streets of London. Dr Briscoe (David King-Wood) discovers that the organism is due to spawn, London could soon be overrun by thousands of killer alien creatures...
The film is a bit of a slow burner but has an air of menace and alien horror over everything which slowly builds. Maybe the final monster looks a bit ridiculous but the film, by then, has earned you suspend enough disbelief. A great film.
