Directed by
| David MacDonald | ... | (as David Macdonald) |
Writing Credits (in alphabetical order)
| Bridget Boland | ... | (adaptation) |
| Jeffrey Dell | ... | (play) |
| A.R. Rawlinson | ... | (adaptation) |
Cast (in credits order)
| Barry K. Barnes | ... | Peter Thurloe | |
| Joan Marion | ... | Dorothy Houghton | |
| Roger Livesey | ... | Charles Houghton | |
| Basil Radford | ... | Bill Madison | |
| Everley Gregg | ... | Emily Madison | |
| Felix Aylmer | ... | Col. Cairns | |
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|
Wallace Douglas | ... | Agent Hooper |
| Henry Oscar | ... | Porter | |
| John Turnbull | ... | Sir Andrew Hamilton | |
| Edward Ashley | ... | Stuart | |
|
|
Hal Walters | ... | Kingswell |
|
|
Santos Casani | ... | Foreigner |
| Rest of cast listed alphabetically: | |||
|
|
Ernest Blyth | ... | Secret Service Agent (uncredited) |
|
|
David Davies | ... | Detective (uncredited) |
Produced by
| John Corfield | ... | producer (uncredited) |
Music by
| Ronnie Munro | ||
Cinematography by
| Bryan Langley | ||
Editing by
| David Lean | ||
Art Direction by
| Duncan Sutherland | ... | (uncredited) |
Production Management
| Bernard Willis | ... | production manager |
Sound Department
| Hal Fuller | ... | sound (uncredited) |