A strange prehistoric beast lurks in the depths of the Amazonian jungle. A group of scientists try to capture the animal and bring it back to civilization for study.
Director: Jack Arnold
Cast: Richard Carlson, Julie Adams, Richard Denning, Antonio Moreno, Nestor Paiva, Whit Bissell, Bernie Gozier, Henry A. Escalante, Anthony Hopkins, Hiroyuki Sanada, Norma Aleandro, Arturo Goetz, Marcos Montes, Sophie Tirouflet, Luciano Suardi