A backwoods game warden and a local doctor discover that giant leeches are responsible for disappearances and deaths in a local swamp, but the local police don't believe them.
You can now watch Attack of the Giant Leeches online on the following streaming providers in the United States.
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| Directing | Bernard L. Kowalski | Director |
| Production | Gene Corman | Producer |
| Camera | John M. Nickolaus Jr. | Director of Photography |
| Editing | Carlo Lodato | Editor |
| Production | Roger Corman | Executive Producer |
| Art | Daniel Haller | Art Direction |
| Writing | Leo Gordon | Screenplay |
| Writing | Leo Gordon | Original Story |
| Sound | Alexander Laszlo | Original Music Composer |
| Editing | Anthony Magro | Associate Editor |
| Camera | Charles Rosher Jr. | First Assistant Camera |
| Production | Jack Bohrer | Production Manager |
| Sound | Al Overton | Sound |
| Art | Richard M. Rubin | Property Master |
| Production | Kinta Zertuche | Production Secretary |
