 | David Farrar als Gregory Black |
 | Geraldine Fitzgerald als Elizabeth Grahame |
 | Roland Culver als Inspector Martin |
 | Jean Cadell als Ellen |
 | Mary Merrall als Lady Southdale |
 | Harcourt Williams als Dr. Septimus Prendergast |
 | Charles Heslop als Vicar |
 | Ronald Adam als Head-Master |
 | Sidney Monckton als Horace (uncredited) |
| Maurice Elvey | Director |
| David Evans | Screenplay |
| Charles Frank | Screenplay |
| John Cox | Sound Recordist |
| T.R. Seddon | Draughtsman |
| Alan Blay | Sound Engineer |
| Betty Sherriff | Hairstylist |
| Vivienne Eden | Administrative Assistant |
| William Dinner | Theatre Play |
| William Morum | Theatre Play |
| Buddy Booth | Third Assistant Director |
| Moray Grant | Camera Operator |
| Ernest Gartside | Producer |
| Allan Gray | Original Music Composer |
| Elizabeth Haffenden | Costume Design |
| Don Terrett | Assistant Editor |
| Stephen Dade | Director of Photography |
| Aldo Manganaro | Makeup Department Head |
| Ceri Davies | Clapper Loader |
| John S. Gartside | Production Manager |
| Edward Rodrigo | Property Buyer |
| Charles Earl | Camera Operator |
| Richard Marden | Assistant Editor |
| Peter Mullins | Scenic Artist |
| Gilbert Mandelik | Production Executive |
| George Provis | Art Direction |
| Ludo Philipp | Conductor |
| Norman Daines | Sound Supervisor |
| Jean Dyball | Continuity |
| Kenneth Rick | Assistant Director |
| Bert Ross | Sound Recordist |
| Micky Dean | Focus Puller |
| Betty Harley | Continuity |
| Douglas Myers | Editor |
