Directed by
| José Gutiérrez Maesso | ||
Writing Credits (in alphabetical order)
| Massimo De Rita | ||
| José Gutiérrez Maesso | ||
| Dino Maiuri | ... | (as Arduino Maiuri) |
| Eugenio Martín | ||
| Santiago Moncada | ||
Cast (in credits order)
| Helmut Berger | ... | Clyde Hart | |
| Sydne Rome | ... | Anne | |
| Kevin McCarthy | ... | Ed McLean (as Kelvin McCarthy) | |
| José María Caffarel | ... | Richard | |
| José Ferrer | ... | Inspector Reed | |
| Juan Luis Galiardo | ... | Richard Francis | |
| Howard Ross | ... | Richard | |
| Manuel Zarzo | ... | Hugo | |
| Álvaro de Luna | ... | Daniel | |
| Frank Braña | ... | Peter Castle | |
| Romano Puppo | ... | Juan | |
 |
Lorenzo Piani | ||
| Rest of cast listed alphabetically: | |||
|
|
Elena Berrido | ... | Rosa |
|
|
Claudio Chea | ... | Tom Sayon |
|
|
César Olmos | ... | Albert Webster |
Produced by
| José Gutiérrez Maesso | ... | producer |
Music by
| Adolfo Waitzman | ||
Cinematography by
| Aiace Parolin | ||
Editing by
| Ángel Serrano | ||
Production Design by
| Rafael Ferri | ||
Set Decoration by
| Lidia Soprani | ||
Makeup Department
| María Elena García | ... | makeup artist |
| Fabrizio Sforza | ... | makeup artist |
| Luciano Vito | ... | hair stylist |
Production Management
| Luciano Appignani | ... | production manager |
| Carlo Giovagnorio | ... | production supervisor |
| Faustino Ocaña | ... | production manager |
Second Unit Director or Assistant Director
| Remo De Angelis | ... | assistant director |
| Félix Fernández | ... | assistant director |
Sound Department
| Antonio Cardin | ... | sound engineer |
Camera and Electrical Department
| Luis Berraquero | ... | assistant camera |
| Gaetano Valle | ... | camera operator |
Script and Continuity Department
| Olga Moller | ... | script supervisor |
Additional Crew
| Fiorella Betti | ... | voice dubbing: Elena Berrito |
| Pino Colizzi | ... | voice dubbing: Helmut Berger |
| Arturo Dominici | ... | voice dubbing: Kevin McCarthy |
| Vittoria Febbi | ... | voice dubbing: Sydne Rome |
| Sergio Fiorentini | ... | voice dubbing: José María Caffarel |
| Michele Gammino | ... | voice dubbing: Manuel Zarzo |
| Antonio Guidi | ... | voice dubbing: Alvaro de Luna |
| Gianni Marzocchi | ... | voice dubbing: Juan Luis Galiardo |
| Glauco Onorato | ... | voice dubbing: Howard Ross |
| Giorgio Piazza | ... | voice dubbing: José Ferrer |
| Renato Turi | ... | voice dubbing: Frank Braña |
| Ángel María Baltanás | ... | voice dubbing: Kevin McCarthy (uncredited) |
| Vicente Bañó | ... | voice dubbing: José Ferrer (uncredited) |
| Juan Miguel Cuesta | ... | voice dubbing: Helmut Berger (uncredited) |
| José Guardiola | ... | voice dubbing: Frank Braña (uncredited) |
| Jesús Nieto | ... | voice dubbing: Romano Puppo (uncredited) |
| Julio Núñez | ... | voice dubbing: César Olmos (uncredited) |
| Claudio Rodríguez | ... | voice dubbing: Juan Luis Galiardo (uncredited) |
| Mayte Santamarina | ... | voice dubbing: Elena Berrido (uncredited) |
| Selica Torcal | ... | voice dubbing: Sydne Rome (uncredited) |
