When her husband is wrongly accused of murder, an opera singer sets out to find the real culprit.
| Directing | Ronald Neame | Director |
| Writing | Winston Graham | Screenplay |
| Writing | Margaret Kennedy | Screenplay |
| Writing | Valerie Taylor | Screenplay |
| Production | Anthony Havelock-Allan | Producer |
| Sound | William Alwyn | Original Music Composer |
| Camera | Guy Green | Director of Photography |
| Editing | Geoffrey Foot | Editor |
| Editing | Jack Harris | Editor |
| Art | Wilfred Shingleton | Art Direction |
| Costume & Make-Up | Joy Ricardo | Costume Design |
| Production | Norman Spencer | Production Manager |
| Directing | George Pollock | Assistant Director |
| Sound | L.E. Overton | Sound Recordist |
| Sound | Charles Poulton | Sound Recordist |
| Sound | Winston Ryder | Sound Editor |
| Sound | Jack Slade | Sound Editor |
| Art | John Bryan | Production Design |
| Production | Pat MacDonnell | Casting |
| Production | Adele Raymond | Casting |
| Directing | Philip Shipway | Second Assistant Director |
| Art | Allan Harris | Draughtsman |
| Art | John Hoesli | Draughtsman |
| Art | T. Hopewell Ash | Assistant Art Director |
| Art | Geoffrey Woodward | Assistant Art Director |
| Sound | David Bowen | Sound Assistant |
| Sound | George Croll | Sound |
| Sound | John Dennis | Sound Mixer |
| Sound | George Willows | Sound |
| Visual Effects | George Blackwell | Visual Effects |
| Visual Effects | Henry Harris | Visual Effects |
| Visual Effects | Jack Higgins | Visual Effects |
| Visual Effects | Syd Howell | Visual Effects |
| Visual Effects | Douglas Woolsey | Visual Effects |
| Camera | Ernest Steward | Camera Operator |
| Camera | Peter Bryan | Camera Operator |
| Camera | John Godar | Focus Puller |
| Camera | Peter Hall | Clapper Loader |
| Camera | Charles Trigg | Still Photographer |
| Costume & Make-Up | Elizabeth Hennings | Wardrobe Supervisor |
| Editing | Doris Nash | Assistant Editor |
| Editing | Margery Saunders | Assistant Editor |
| Sound | Muir Mathieson | Music Director |
| Directing | Maggie Unsworth | Continuity |
| Production | Stuart Chant | Publicist |
| Production | Vicky Fuggle | Production Secretary |
