 | Nova Pilbeam als Erica Burgoyne |
 | Derrick De Marney als Robert Tisdall |
 | Percy Marmont als Col. Burgoyne |
 | Edward Rigby als Old Will |
 | Mary Clare als Erica's Aunt Margaret |
 | John Longden als Det. Insp. Kent |
 | George Curzon als Guy |
 | Basil Radford als Erica's Uncle Basil |
 | Pamela Carme als Christine Clay |
 | George Merritt als Det. Sgt. Miller |
 | J.H. Roberts als Solicitor Henry Briggs |
 | Jerry Verno als Lorry Driver |
| H.F. Maltby als Police Sergeant |
| John Miller als Police Constable |
| Pat Fitzpatrick als Harold a Little Boy at Birthday Party (uncredited) |
 | Alfred Hitchcock als Photographer Outside Courthouse (uncredited) |
 | Anna Konstam als Elsie a Bather at Beach (uncredited) |
 | Bill Shine als Manager of Tom's Hat Cafe (uncredited) |
 | Peggy Simpson als Alice a Bather at Beach (uncredited) |
 | Torin Thatcher als Nobby's Lodging House Caretaker (uncredited) |
| Alfred Hitchcock | Director |
| Josephine Tey | Novel |
| Charles Bennett | Screenplay |
| Edwin Greenwood | Screenplay |
| Anthony Armstrong | Screenplay |
| Gerald Savory | Dialogue |
| Edward Black | Producer |
| Bernard Knowles | Director of Photography |
| Charles Frend | Editor |
| Alfred Junge | Art Direction |
| Stephen Dade | Camera Operator |
| Marianne | Wardrobe Designer |
| Jack Beaver | Original Music Composer |
| Pen Tennyson | Assistant Director |
| Reg Johnson | Assistant Camera |
| Louis Levy | Music Director |
| Alma Reville | Continuity |
| A. O'Donoghue | Sound Recordist |
| Louis Levy | Original Music Composer |
