DirectorStephen Weeks Music directorCarl Davis Duration LanguageEnglish
Release dateNovember 1, 1971 (UK)
1973 (USA) Based onThe Strange Case of Dr. Jekyll and Mr. Hyde by Robert Louis Stevenson WriterRobert Louis Stevenson (novel), Milton Subotsky (screenplay) CastChristopher Lee (Dr. Charles Marlowe), Peter Cushing (Frederick Utterson), Mike Raven (Enfield), Richard Hurndall (Lanyon), George Merritt (Poole), Kenneth J. Warren (Deane) Similar moviesChristopher Lee and Peter Cushing appear in I - Monster and The Creeping Flesh
I, Monster is a 1971 British horror film directed by Stephen Weeks (his feature debut) for Amicus Productions. It is an adaptation of Robert Louis Stevenson's Strange Case of Dr. Jekyll and Mr. Hyde, with the main characters' names changed to Dr. Charles Marlowe and Mr. Edward Blake.
Psychologist Charles Marlowe (Lee) invents a drug which will release his patients' inhibitions. When he tests it on himself, he becomes the evil Edward Blake, who descends into crime and eventually murder. Utterson (Cushing), Marlowe's lawyer, believes that Blake is blackmailing his friend until he discovers the truth.
Christopher Lee – Dr. Charles Marlowe / Edward Blake
Peter Cushing – Frederick Utterson
Mike Raven – Enfield
Richard Hurndall – Dr. Hastie Lanyon
George Merritt – Mr. Poole
Kenneth J. Warren – Mr. Deane
Susan Jameson – Diane Thomas
Marjie Lawrence – Annie
Aimée Delamain – Landlady
Michael Des Barres – Boy in Alley
Lesley Judd – Woman in Alley (uncredited)
Ian McCulloch – Man at Bar (uncredited)
It stars Christopher Lee as the Doctor and his alter ego, and Peter Cushing as Frederick Utterson, a central character in Stevenson's original story. Mike Raven and Susan Jameson also star. It was photographed by Moray Grant, with music by Carl Davis.
Peter Duffell who had previously worked for Amicus was offered the movie to direct but turned it down. Finance came from British Lion and the NFFC.
It was intended to be shown in 3-D utilizing the Pulfrich effect but the idea was abandoned upon release.
The film performed poorly at the box office. Time has been kinder to the film and it is now seen as a very faithful adaptation with Drew Hunt of Chicago Reader listing it as one of Christopher Lee's five best roles.