In this Amicus production of "Dr. Jekyll & Mr. Hyde," Christopher Lee plays Dr. Marlowe and Mr. Blake, whose names have been changed. Dr. Marlowe, played by Lee, experiments with intravenous drugs that are supposed to release inner inhibitions. So Mr. Blake (also Lee) appears, becoming more monstrous with each transformation. Dr. Utterson, played by Peter Cushing, is his friend and colleague.