Overview
In a tributary of the Amazon, a monster – half-man, half-fish – is captured and placed in a reservoir in a Florida national park to be observed by scientists.
Cast & Crew
Director: Jack Arnold
Cast: John Agar, Lori Nelson, John Bromfield, Nestor Paiva, Grandon Rhodes, Dave Willock, Robert B. Williams, Charles Cane, Loretta Agar, Bill Baldwin, Jere Beery, Ricou Browning
