In this sequel to 'Frankenstein Created Woman' (1967), the Baron (Peter Cushing) hatches a plan to use the body of his colleague, Dr Brandt, as the basis for his latest creation. When Brandt is commited to an asylum, Frankenstein blackmails a young couple into staging an abduction. The doctor suffers a fatal coronary, however, forcing the Baron to reconsider his initial plan. He decides that Brandt, or his brain at least, can still be of some use.