This was the day the universe trembled before the demon forces of the killer planet!

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.

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Main Cast: Barry Sullivan, Norma Bengell, Ángel Aranda, Evi Marandi, Stelio Candelli, Franco Andrei, Fernando Villena, Mario Morales, Ivan Rassimov, Federico Boido

Director: Mario Bava

Writers: Ib Melchior, Rafael J. Salvia, Antonio Román, Alberto Bevilacqua, Mario Bava, Callisto Cosulich

Editors: Antonio Gimeno, Romana Fortini

Cinematographer: Antonio Rinaldi

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