The mythical story of a dangerous half-human, half-fish creature lurking in the depths of the Amazon. After discovering a unique prehistoric claw fossil on an expedition deep in the jungle, archaeologists investigate it's origins which lead them directly to a mysterious creature. Led by marine life specialist David Reed (Richard Carlson), the men try to capture the monster who has become obsessed with David's assistant Kay (Julia Adams).
Director: Jack Arnold
Producer: Brian Rosen
Producer: Charles Roven
Producer: William Alland
Actor: Julie Adams
Actor: Richard Carlson
Actor: John Agar
Actor: Jeff Morrow
Actor: Julia Adams
Actor: Lori Nelson
Actor: Rex Reason
Actor: John Bromfield
Actor: Leigh Snowden
Actor: Richard Denning
Actor: Antonio Moreno
Actor: Gregg Palmer
Actor: Nestor Paiva
Actor: Grandon Rhodes
Actor: Maurice Manson
Actor: Dave Willock
Actor: James Rawley
Actor: David McMahon
Actor: Robert B. Williams
Actor: Charles Cane
Actor: Paul Fierro
Actor: Brett Halsey
Actor: Lillian Molieri
Actor: Larry Hudson
Actor: Julio Lopez
Actor: Clint Eastwood
Actor: Ned Le Fevre
Actor: Frank Chase
Actor: Don Megowan
Actor: Robert Nelson
Actor: Perry Lopez
Actor: Ricou Browning
Actor: Whit Bissell
Actor: Bernie Gozier
Actor: Henry Escalante
Actor: Rodd Redwing
Actor: Ben Chapman
Actor: Sydney Mason
Actor: Don C. Harvey
Actor: Jack Gargan
Actor: Charles Victor
Actor: Robert Hoy
Actor: Don House