| Anna Neagle | ... | Sally Maitland | |
| Richard Greene | ... | Lieutenant Commander Jim Garrick | |
| Nova Pilbeam | ... | Betty Maitland | |
| Albert Lieven | ... | Jan Orlock | |
| Lucie Mannheim | ... | Madame Orlock | |
| George Thorpe | ... | Colonel Charles Hargraves | |
| Marjorie Fielding | ... | Lady Maitland | |
| Franklin Dyall | ... | Captain Foster | |
| Margaret Rutherford | ... | Mrs. Towcester | |
| Claude Bailey | ... | Major Fothergill | |
| Sybille Binder | ... | Madame Orlock's Attendant (as Sybilla Binder) | |
| Valentine Dyall | ... | German Commander | |
| Cyril Fletcher | ... | Entertainer | |
| rest of cast listed alphabetically: | |||
| Grace Allardyce | ... | Maitland's Maid (uncredited) | |
| Madge Brindley | ... | Newspaper Seller at Railway Station (uncredited) | |
| Clifford Buckton | ... | Ship's Captain (uncredited) | |
| Patric Curwen | ... | Sir William Maitland (uncredited) | |
| Edgar Driver | ... | Ticket Collector on Train (uncredited) | |
| Paul Dupuis | ... | Paul, Intelligence Officer (uncredited) | |
| Leslie Dwyer | ... | Ship's Steward (uncredited) | |
| Anthony Eustrel | ... | Commissionaire (uncredited) | |
| Ian Fleming | ... | Observer Corpsman in Opening Scene (uncredited) | |
| Hedley Goodall | ... | Passport Officer (uncredited) | |
| Grizelda Harvey | ... | Receptionist (uncredited) | |
| David Horne | ... | Admiral (uncredited) | |
| John Kannowin | ... | Intelligence Agent (uncredited) | |
| Tatiana Lieven | ... | Chambermaid (uncredited) | |
| John Longden | ... | Officer (uncredited) | |
| Eliot Makeham | ... | Observer Corpsman in Opening Scene (uncredited) | |
| Aubrey Mallalieu | ... | Reynolds (uncredited) | |
| Gordon McLeod | ... | Officer (uncredited) | |
| Winifred Oughton | ... | Mrs. Hargraves (uncredited) | |
| MacDonald Parke | ... | Intelligence Chief (uncredited) | |
| Victor Rietti | ... | Waiter (uncredited) | |
| David Ward | ... | Sally's Escort (uncredited) | |
| Gerry Wilmot | ... | Intelligence Agent (uncredited) | |
Directed by | |||
| Herbert Wilcox | |||
Writing credits | ||
| P.M. Bower | (writer) | |
| Miles Malleson | (screenplay) & | |
| DeWitt Bodeen | (screenplay) (as De Witt Bodeen) | |
Produced by | |||
| Herbert Wilcox | .... | producer | |
Original Music by | |||
| Clifton Parker | |||
Cinematography by | |||
| Mutz Greenbaum | (director of photography) (as Max Greene) | ||
Film Editing by | |||
| Vera Campbell | |||
Art Direction by | |||
| William C. Andrews | (as W.C. Andrews) | ||
Makeup Department | |||
| Tony Sforzini | .... | makeup artist | |
Production Management | |||
| George Maynard | .... | production manager | |
Second Unit Director or Assistant Director | |||
| Frank Hollands | .... | assistant director | |
Sound Department | |||
| Desmond Dew | .... | sound recordist | |
| Harry Miller | .... | sound editor | |
| John Stevens | .... | sound recordist | |
Camera and Electrical Department | |||
| Alan Hume | .... | focus puller (uncredited) | |
Music Department | |||
| Muir Mathieson | .... | conductor | |
| Muir Mathieson | .... | conductor: London Symphony Orchestra | |
Other crew | |||
| H. Longdon | .... | technical advisor (as Lt. Comm. H. Longdon) | |
| L.J. Wastell | .... | technical advisor (as L/o L.J. Wastell) | |
| Vicky Fuggle | .... | production secretary (uncredited) | |
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| Marie Galante | 49th Parallel | British Intelligence | Ministry of Fear | Action in Arabia |
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| Full cast and crew | Company credits | External reviews |
| IMDb Drama section | IMDb UK section | Add this title to MyMovies |
This film is pretty typical of the WW II spy genre. Performances are okay but nothing special. Most of the story takes place in Canada, where the RCMP are responsible for catching enemy agents. The entire scenario is very easy to figure out so there are no real surprises as the various characters show their true loyalties. The ending is neatly wrapped up in a satisfying manner.