On a volcanic island near the Kingdom of Hetvia rules Count Dakkar, a benevolent leader and scientist who has eliminated class distinction among the island's inhabitants. Dakkar, his sister Sonia and her fiance, engineer Nicolai Roget have designed a submarine which Roget pilots on its initial voyage just before the island is overrun by Baron Falon, despotic ruler of Hetvia. Falon sets out after Roget in a second submarine and the two craft, diving to the ocean's floor, discover a strange land populated by dragons, giant squid and an eerie undiscovered humanoid race.
Unfortunately the movie The Mysterious Island is not yet available on HBO Max.
| Directing | Lucien Hubbard | Director |
| Directing | Benjamin Christensen | Director |
| Directing | Maurice Tourneur | Director |
| Writing | Lucien Hubbard | Writer |
| Writing | Jules Verne | Book |
| Production | J. Ernest Williamson | Producer |
| Sound | Martin Broones | Music |
| Sound | William Axt | Music |
| Sound | Arthur Lange | Music |
| Sound | Paul Lamkoff | Music |
| Editing | Carl Pierson | Editor |
| Art | Cedric Gibbons | Art Direction |
| Crew | J. Ernest Williamson | Special Effects |
| Camera | Percy Hilburn | Director of Photography |
