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Peter Sellers as Juan Bautista |
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Britt Ekland as Olimpia Segura |
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Rossano Brazzi as Carlos Matabosch |
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Adolfo Celi as Francisco Carbonell |
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Hattie Jacques as Trinity Martinez |
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Ferdy Mayne as Silvestre Flores |
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Kenneth Griffith as Pepe Gamazo |
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Al Lettieri as Eugenio Gomez |
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Marne Maitland as Luis Castillo |
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John Wells as Pompadour Major Domo |
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Don Lurio as Ramon Gonzales |
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La Chana as Flamenco Dancer |
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Alfredo Chetta as Ilya (uncredited) |
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Giustino Durano as Druggist (uncredited) |
| Directing | Robert Parrish | Director |
| Writing | David R. Schwartz | Screenplay |
| Editing | John Jympson | Editor |
| Writing | Burt Cole | Novel |
| Camera | Gerry Turpin | Director of Photography |
| Production | Jerry Gershwin | Producer |
| Production | Elliott Kastner | Producer |
| Production | David R. Schwartz | Associate Producer |
| Sound | Francis Lai | Original Music Composer |
| Production | Donald M. Ashton | Production Designer |
| Art | Elven Webb | Art Direction |
| Costume & Make-Up | Harry Frampton | Makeup Artist |
| Costume & Make-Up | John O'Gorman | Makeup Artist |
| Costume & Make-Up | Amalia Paoletti | Hairstylist |
| Production | Denis Holt | Production Supervisor |
| Production | Orazio Tassara | Production Manager |
| Directing | Gus Agosti | Assistant Director |
| Art | Franco Fumagalli | Set Dresser |
| Art | Giovanni Natalucci | Set Designer |
| Art | Italo Tomassi | Set Designer |
| Sound | Rusty Coppleman | Sound Editor |
| Sound | Sash Fisher | Sound Recordist |
| Sound | Gordon K. McCallum | Sound Recordist |
| Sound | Otto Snel | Sound Re-Recording Mixer |
| Lighting | Raffaele Marino | Gaffer |
| Camera | Ronnie Taylor | Camera Operator |
| Costume & Make-Up | Adriana Berselli | Costumer |
| Editing | Pamela Tomling | Assistant Editor |
| Editing | Richard Craven | Assistant Editor |
| Sound | Christian Gaubert | Conductor |
| Sound | Christian Gaubert | Music Arranger |
| Directing | Yvonne Axeworthy | Continuity |
| Crew | Al Lettieri | Dialogue Coach |
