In the midst of Nazi air raids, a postman dies on the operating table at a rural hospital. But was the death accidental?
| Actor | Role |
|---|---|
 Leo GennMr. Eden | Mr. Eden |
 Alastair SimInspector Cockrill | Inspector Cockrill |
 Trevor HowardDr. Barnes | Dr. Barnes |
 Sally GrayNurse Freddi Linley | Nurse Freddi Linley |
 Rosamund JohnNurse Esther Sanson | Nurse Esther Sanson |
 Judy CampbellSister Marion Bates | Sister Marion Bates |
 Megs JenkinsNurse Woods | Nurse Woods |
 Ronald AdamDr. White | Dr. White |
 George WoodbridgeDetective Sgt. Hendricks | Detective Sgt. Hendricks |
| JJohn RaePorter | Porter |
 Henry EdwardsMr. Purdy | Mr. Purdy |
 Moore MarriottJoseph Higgins | Joseph Higgins |
| FFrank LingRescue Worker | Rescue Worker |
| WWendy ThompsonSister Carter | Sister Carter |
 Hattie JacquesNot listed | Not listed |