He may be calling himself "Dr. Stein," but the audience isn't fooled: that popular general practitioner (Peter Cushing) in the mittel-European village of Carlsbruck is none other than our old friend, Victor Frankenstein. No one seems unduly concerned when the patients in a charity clinic begin losing their arms and legs during Dr. Stein's emergency operations -- no one except his young rival, Dr. Kleve (Kerwin Mathews). Threatening to expose Dr. Stein as the fugitive from justice he really is, Kleve is instead persuaded to be Stein's partner. Things really begin heating up when Stine and Kleve use the brain of vengeful village hunchback Karl (Oscar Quitak) for their new synthetic monster. Adding to the climactic melee is another monster, built in the image of Dr. Frankenstein himself! Full of clever (if gory) touches, Revenge of Frankenstein is among the best of Hammer Studio's late-1950s output.
~ Hal Erickson, All Movie Guide