Mysterious Island (1951): cast, story & where to watch
1951 · Film · ★ 5

Released in 1951, Mysterious Island is an action, fantasy, adventure and science fiction film directed by Spencer Gordon Bennet, running about 252 minutes. “SEE Sensational Inter-Space Serial Thrills...as Mercury Space Ship Invades...” — that tagline sets the tone.
What it’s about. It is 1865 and Union prisoners use a military balloon to escape a Southern prison camp near the end of the Civil War. The balloon drifts for days and finally lands on a mysterious volcanic island with very unusual inhabitants. Also landing, in a better aircraft, is Rulu, a visitor from Mercury. She seeks a radio-active material that will enable her to manufacture an explosive that will destroy the world or, at least, the portion known as Earth in this 15 Chapter Serial from the 1950s.
Who’s in it. Mysterious Island stars Richard Crane as Capt. Cyrus Harding, Marshall Reed as Jack Pencroft, Karen Randle as Rulu of Mercury and Ralph Hodges as Herbert 'Bert' Brown, among others.
How it landed. With an audience score of 5.0/10, Mysterious Island has proved divisive with audiences.
Where to watch. In US you can stream it on fuboTV, Philo, Fandor and Fandor Amazon Channel. See the full, country-by-country breakdown on our where to watch Mysterious Island page.
If you liked it. Fans of Mysterious Island tend to enjoy The Dark Knight, The Lord of the Rings: The Return of the King, Inception and The Lord of the Rings: The Fellowship of the Ring.
Frequently asked
- Where can I watch Mysterious Island (1951)?
- In US, Mysterious Island is available to stream on fuboTV, Philo and Fandor. Availability varies by country — check our where-to-watch page for every region.
- Is Mysterious Island worth watching?
- Mysterious Island holds an audience score of 5.0 out of 10, and is a strong pick if you enjoy action, fantasy, adventure and science fiction. Reactions are mixed, so it may depend on taste.
- Who stars in Mysterious Island?
- Mysterious Island stars Richard Crane, Marshall Reed, Karen Randle, Ralph Hodges and Gene Roth.
- When was Mysterious Island released?
- Mysterious Island was released in 1951, with a runtime of about 252 minutes.
