Directed by Gordon Hessler (The Oblong Box (1969) and Cry of the Banshee (1970)), produced by Amicus Productions for American International Pictures. This sci-fi/thriller/horror is a bit of a confusing hotch-potch of genres, which has far too much going on, it has some good moments but it gets itself tied up in knots. Detective Superintendent Bellaver (Alfred Marks) is investigating the deaths of several girls in the London area, these women picked up at nightclubs are killed by the unstoppable Keith (Michael Gothard). Their investigations lead them to the country house and clinic of Dr. Browning (Vincent Price), who specialises in hand and limb transplants. But he's hiding a dark secret, one which government official Fremont (Christopher Lee) knows about, and so does Major Heinrich Benedek (Peter Cushing). The poster and promotion is very misleading. as it's Marks who's the real star of the film here. Price, Lee and Cushing only have extended cameos. It has a brilliant chase sequence in the middle, but they've crammed too much into this film, including a pointless Eastern European bit.