Spurred on by the death of his drug-addicted sister at the hands of ruthless narcotics kingpin Frank McNally, U.S. drug enforcement agent Charles Sturgis embarks on an investigation that takes him from New York to London, Lisbon, Rome, Naples and finally Athens in pursuit of McNally's shapely associate, Gina Broger.
| Directing | John Gilling | Director |
| Writing | John Paxton | Screenplay |
| Sound | Richard Rodney Bennett | Original Music Composer |
| Camera | Ted Moore | Director of Photography |
| Editing | Richard Best | Editor |
| Production | Albert R. Broccoli | Producer |
| Writing | A.J. Forrest | Story |
| Sound | Muir Mathieson | Conductor |
| Production | Cecil R. Foster Kemp | Production Supervisor |
| Art | Paul Sheriff | Art Direction |
| Directing | Max Varnel | Second Unit Director |
| Camera | Stanley Pavey | Second Unit Director of Photography |
| Directing | Alec Gibb | Assistant Director |
| Directing | Bluey Hill | Assistant Director |
| Directing | Kay Rawlings | Continuity |
| Directing | Olga Brook | Continuity |
| Camera | Skeets Kelly | Camera Operator |
| Camera | Harold Haysom | Camera Operator |
| Art | Maurice Fowler | Assistant Art Director |
| Art | Syd Cain | Assistant Art Director |
| Production | John Cabrera | Location Manager |
| Sound | Norman Coggs | Sound Recordist |
| Sound | Len Shilton | Sound Recordist |
| Production | Nora Roberts | Casting |
| Costume & Make-Up | Roy Ashton | Makeup Artist |
| Costume & Make-Up | Bill Griffiths | Hairdresser |
| Production | Phil C. Samuel | Associate Producer |
| Production | Irving Allen | Producer |
| Sound | Don Saunders | Sound Editor |
