| Photos (see all 5 | slideshow) |
| Barry Sullivan | ... | Capt. Mark Markary | |
| Norma Bengell | ... | Sanya | |
| Ángel Aranda | ... | Wess | |
| Evi Marandi | ... | Tiona | |
| Stelio Candelli | ... | Brad / Mud | |
| Franco Andrei | ... | Bert / Garr | |
| Fernando Villena | ... | Dr. Karan | |
| Mario Morales | ... | Eldon | |
| Ivan Rassimov | ... | Carter / Dervy | |
| Federico Boido | ... | Keir (as Rico Boido) | |
| Alberto Cevenini | ... | Toby Markary / Wan | |
| rest of cast listed alphabetically: | |||
| Massimo Righi | ... | Capt. Sallas / Nordeg (uncredited) | |
Directed by | |||
| Mario Bava | |||
Writing credits(in alphabetical order) | ||
| Mario Bava | original version | |
| Alberto Bevilacqua | original version | |
| Callisto Cosulich | original version | |
| Louis M. Heyward | English language version | |
| Ib Melchior | English language version | |
| Renato Pestriniero | story "One Night of 21 Hours" | |
| Antonio Román | original version | |
| Rafael J. Salvia | original version | |
Produced by | |||
| Samuel Z. Arkoff | .... | executive producer | |
| Salvatore Billitteri | .... | associate producer | |
| Fulvio Lucisano | .... | producer | |
| James H. Nicholson | .... | executive producer | |
Original Music by | |||
| Gino Marinuzzi Jr. | |||
Cinematography by | |||
| Antonio Pérez Olea | |||
| Antonio Rinaldi | |||
| Mario Bava | (uncredited) | ||
Film Editing by | |||
| Romana Fortini | |||
| Antonio Gimeno | |||
Set Decoration by | |||
| Giorgio Giovannini | |||
Costume Design by | |||
| Gabriele Mayer | |||
Makeup Department | |||
| Gabriella Borzelli | .... | hair stylist | |
| Giancarlo Del Brocco | .... | assistant makeup artist | |
| Amato Garbini | .... | head makeup artist | |
Production Management | |||
| Giancarlo Sambucini | .... | production director | |
| Mario Silvestri | .... | production manager | |
Art Department | |||
| Emilio Zago | .... | assistant set designer | |
Sound Department | |||
| Eugenio Fiori | .... | sound recordist | |
| Mario Ronchetti | .... | boom operator | |
Special Effects by | |||
| Mario Bava | .... | special effects (uncredited) | |
| Carlo Rambaldi | .... | model maker (uncredited) | |
Camera and Electrical Department | |||
| Giorgio Aureli | .... | assistant camera | |
| Saverio Diamante | .... | camera operator (as Saverio Diamanti) | |
Music Department | |||
| Gino Marinuzzi Jr. | .... | music arranger | |
Other crew | |||
| Lamberto Bava | .... | assistant to director | |
| Serena Canevari | .... | assistant to director | |
| Paolo Ketoff | .... | electronic effects | |
| Lucio Romeo | .... | production secretary | |
| Manuel San Román | .... | assistant to director | |
| Rosalba Scavia | .... | script supervisor | |
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| Full cast and crew | Company credits | External reviews |
| IMDb Horror section | IMDb Spain section | Add this title to MyMovies |
In typical Bava fashion this movie has great visuals, atmosphere, and a great overall 'feel' of uneasiness. The story is very well done and ahead of it's time, and parts of it were later used (and referenced in) Alien.
Two ships land on a mysterious planet after receiving a distress call, only it turns out it wasn't in distress at all... it was a lure so they can spring a trap. The bodyless aliens turn the crew against each other so they can take over their bodies, leaving the living to wonder who's on their side and who's been taken over by the unseen enemy.
This is a great early sci-fi gem that has a great mix of horror, a mix between Star Trek and Invasion of the Body Snatchers is how this could be described. Worth a watch if you can find it.