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.
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.
John Agar , Lori Nelson , John Bromfield
Alexander Golitzen
Universal Pictures , Universal International Pictures
as Prof. Clete Ferguson
as Helen Dobson
