I, Monster
We don’t recommend it under 13. Jekyll and Hyde with murders.
Reason translated with AI from our Spanish original.
Good to know
- Scary scenes
- Frightening villains, monsters, transformations or jump scares.
- Fighting or violence
- Punches, weapons, injuries; slapstick barely counts.
Medium confidence
Medium confidence · They broadly agree.
Where to watch
UK
Not on streaming services in the UK right now.
US
Free (with ads): 
Fawesome
Mometu
Spain
Included with subscription: 
Filmin
Netflix
Availability as of 18 October 2026. Data from JustWatch. Streaming data and logos: JustWatch.
TMDb user score
What it’s about
Christopher Lee stars in this Amicus production of “Dr. Jekyll & Mr. Hyde” where the names have been changed to Dr. Marlowe and Mr. Blake. Lee as Dr. Marlowe experiments with intravenous drugs that are suppose to release inner inhibitions. So comes forth Mr. Blake (also Lee) who gets more monstrous with each transformation. Peter Cushing plays his friend and colleague, Dr. Utterson.
Genres: Horror, Science Fiction
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This product uses the TMDB API but is not endorsed or certified by TMDB. Streaming data: JustWatch.