"After landing on a mysterious planet, a team of astronauts begin to turn on each other, swayed by the uncertain influence of the planet and its strange inhabitants."
Barry Sullivan
as Captain Mark Markary
Norma Bengell
as Sanya
Ángel Aranda
as Wess
Evi Marandi
as Tiona
Stelio Candelli
as Brad / Mud
Franco Andrei
as Bert / Garr
Fernando Villena
as Dr. Karan
Mario Morales
as Eldon
Ivan Rassimov
as Carter / Dervy
Federico Boido
as Keir
Alberto Cevenini
as Toby Markary / Wan
Massimo Righi
as Captain Sallas / Nordeg
Vito Fasano
as (uncredited)
Mario Bava
Director
Renato Pestriniero
Original Story
Giorgio Giovannini
Production Design
Mario Silvestri
Line Producer
Giancarlo Sambucini
Production Manager
Serena Canevari
First Assistant Director
Manuel San Román
Lamberto Bava
Second Assistant Director
Lucio Romeo
Script Supervisor
Rosalba Scavia
Saverio Diamante
Camera Operator
Giorgio Aureli
Assistant Camera
Emilio Zago
Assistant Set Decoration
Mario Ronchetti
Sound
Eugenio Fiori
Boom Operator
Giancarlo Del Brocco
Assistant Makeup Artist
Paolo Ketoff
Sound Effects
Fulvio Lucisano
Producer
Gino Marinuzzi Jr.
Original Music Composer
Antonio Rinaldi
Director of Photography
Romana Fortini
Editor
Antonio Gimeno
Gabriele Mayer
Costume Design
Gabriella Borzelli
Hairstylist
Amato Garbini
Makeup Artist
Carlo Rambaldi
Special Effects
Ib Melchior
Screenplay
Alberto Bevilacqua
Callisto Cosulich
Antonio Román
Rafael J. Salvia