I, Monster (1971): cast, story & where to watch
1971 · Film · ★ 5.5

Released in 1971, I, Monster is a horror and science fiction film directed by Stephen Weeks, running about 70 minutes.
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.
Who’s in it. I, Monster stars Christopher Lee as Dr. Charles Marlowe / Mr. Edward Blake, Peter Cushing as Frederick Utterson, Mike Raven as Enfield and Richard Hurndall as Lanyon, among others.
How it landed. With an audience score of 5.5/10, I, Monster has drawn a solid, mixed-to-positive response.
Where to watch. Streaming options change often. See the full, country-by-country breakdown on our where to watch I, Monster page.
If you liked it. Fans of I, Monster tend to enjoy Psycho, The Silence of the Lambs, The Shining and Alien.
Frequently asked
- Where can I watch I, Monster (1971)?
- Streaming, rental and purchase options for I, Monster change frequently. Check our where-to-watch page for the latest availability in your country.
- Is I, Monster worth watching?
- I, Monster holds an audience score of 5.5 out of 10, and is a strong pick if you enjoy horror and science fiction. Reactions are mixed, so it may depend on taste.
- Who stars in I, Monster?
- I, Monster stars Christopher Lee, Peter Cushing, Mike Raven, Richard Hurndall and George Merritt.
- When was I, Monster released?
- I, Monster was released in 1971, with a runtime of about 70 minutes.
