Directed by
| Tanio Boccia | ... | (as Amerigo Anton) |
Writing Credits (in alphabetical order)
| Tanio Boccia | ... | (screenplay) (as Amerigo Anton) |
| Tanio Boccia | ... | (story) (as Amerigo Anton) |
| Alberto De Rossi | ... | (screenplay) |
| Alberto De Rossi | ... | (story) |
| Mario Moroni | ... | (screenplay) |
| Mario Moroni | ... | (story) |
| H.S. Valdés | ... | (screenplay) |
| H.S. Valdés | ... | (story) |
| Fernando Vitali | ... | (screenplay) |
| Fernando Vitali | ... | (story) |
Cast (in credits order)
| Lang Jeffries | ... | George Collins | |
 |
Aurora de Alba | ... | Olga |
| Rafael Bardem | ... | Professor Calvert | |
|
|
Eleonora Bianchi | ... | Elena |
|
|
Gloria Osuna | ... | Molly |
|
|
Wladimiro Tuicovich | ... | (as Wladimiro Tuicovic) |
|
|
Ángel Jordán | ... | Charlie Andover |
|
|
Moa Tahi | ||
|
|
Joe Kamel | ||
|
|
Nando Angelini | ||
|
|
Gianni Solaro | ... | C.I.A. Manager |
|
|
Aldo Bonamano | ||
|
|
Andrea Scandurra | ||
| Rest of cast listed alphabetically: | |||
|
|
Rocco Lerro | ... | A lab guardian (uncredited) |
|
|
Moisés Augusto Rocha | ... | Thug (uncredited) |
Music by
| Piero Umiliani | ||
Cinematography by
| Ricardo Torres | ||
Editing by
| Ángel Serrano | ||
Production Design by
| Saverio D'Eugenio | ||
Set Decoration by
| Nicola Tamburo | ||
Costume Design by
| Giorgio Desideri | ||
Makeup Department
| Antonietta Caputo | ... | hair stylist |
| Emilia Fernández | ... | hair stylist |
| Duilio Giustini | ... | makeup artist |
Production Management
| Paolo Prestano | ... | production manager (as Francesco Paolo Prestano) |
| Luigi Rotolo | ... | general production manager |
Second Unit Director or Assistant Director
| Mario Casalini | ... | assistant director |
| Ángel Falquina | ... | assistant director |
| Ángel Forqué | ... | assistant director |
Sound Department
| Armando Loffredi | ... | sound |
| Luis Rodríguez | ... | sound |
Special Effects by
| Giovanni Stacchini | ... | special effects (as G. Stacchini) |
Stunts
| Rocco Lerro | ... | stunts (uncredited) |
Music Department
| Carol Danell | ... | composer: song "Danger's Waiting" |
Additional Crew
| Gino Baghetti | ... | voice dubbing: Rafael Bardem (uncredited) |
| Fiorella Betti | ... | voice dubbing: Eleonora Bianchi (uncredited) |
| Rosetta Calavetta | ... | voice dubbing: Aurora De Alba (uncredited) |
| Gualtiero De Angelis | ... | voice dubbing: Gianni Solaro (uncredited) |
| Maria Pia Di Meo | ... | voice dubbing: Gloria Osuna (uncredited) |
| Pino Locchi | ... | voice dubbing: Lang Jeffries (uncredited) |
| Renato Turi | ... | voice dubbing: Wladimiro Tuicovich (uncredited) |
