 | Jeremy Brett als David Malcolm |
 | Prunella Ransome als Barbara Carey |
 | Nicky Henson als Martin Foster |
 | Pamela Salem als Carol |
 | Vassili Karis als Giulio |
 | Gabriele Tinti als Enzo Lombardi |
 | Fabrizio Jovine als Inspector Casati |
 | Sherry Buchanan als Mary Ann Saunders |
 | Umberto Raho als Doctor |
 | Patrizia Webley als Valeria Santoro |
 | Paul Müller als Maresciallo |
 | Lars Bloch als Charles |
 | Marco Mastantuono als Frederick |
| Veronica Wells als Cynthia |
| Paul Müller als Maroschiallo |
 | Mascia Musy als Consuelo |
| katherine Berg als Arlene |
| Walter Williams als Optician |
 | Peter Boom als Hotel Concierge |
| Helen Stirling als Director of Academy |
| Stefania Maccarone als Girl on boat |
| Nestore Ungaro | Director |
| Giuseppe Mangano | Art Direction |
| Jeremy Burnham | Writer |
| Augusto Caminito | Writer |
| Nestore Ungaro | Writer |
| Tony Hatch | Original Music Composer |
| Tony Hatch | Conductor |
| Nestore Ungaro | Story |
| Eleanor Kearney | Production Coordinator |
| Robert Mandell | Production Coordinator |
| Nestore Ungaro | Producer |
| Tony Lenny | Supervising Editor |
| Angelo Curi | Supervising Editor |
| John Poyner | Supervising Sound Editor |
| Robert Kellett | Associate Producer |
| Lucio Trentini | Production Supervisor |
| Federico Tocci | Location Manager |
| Rebecca Howard | Casting Director |
| Antonio Gabrielli | Assistant Director |
| Daniele Nannuzzi | Camera Operator |
| Mario Bagnato | Camera Operator |
| Marion Luisa Mertes | Continuity |
| Bona Nasalli-Rocca | Wardrobe Supervisor |
| Franco Corridoni | Makeup Artist |
| Aldo Signoretti | Hairdresser |
| Mario Tursi | Still Photographer |
| Mario Dallimonti | Sound Mixer |
| Graham Harris | Sound Editor |
| Christopher Lancaster | Sound Editor |
| Mike Le Mare | Sound Editor |
| Peter Penell | Sound Editor |
| Alan Willis | Music Editor |
| Bill Rowe | Sound Re-Recording Mixer |
| Armando Scarano | Property Master |
| Marcello Gabriele | Gaffer |
| Giulio Diamanti | Key Grip |
| Germano Natali | Special Effects |
| Linda Nettleson | Production Secretary |
| Gunter Glinka | Editor |
