Jim Ackland, who suffers from a head injury sustained in a bus crash, is the chief suspect in a murder hunt, when a girl that he has just met is found dead on the local common, and he has no alibi for the time she was killed.
| Writing | Eric Ambler | Screenplay |
| Directing | Roy Ward Baker | Director |
| Writing | Eric Ambler | Novel |
| Production | Herbert Smith | Executive Producer |
| Art | Harold Hurdell | Draughtsman |
| Camera | Arthur Evans | Still Photographer |
| Camera | Erwin Hillier | Director of Photography |
| Sound | William Alwyn | Music |
| Production | Irene Howard | Casting |
| Editing | Alan Jaggs | Editor |
| Costume & Make-Up | Eleanor Abbey | Costume Design |
| Art | Alex Vetchinsky | Art Direction |
