Five years after George Radcliffe was the chief witness in a high profile murder case, his wife receives a blackmailing letter accusing him of the crime.
| Actor | Role |
|---|---|
 Gary CooperGeorge Radcliffe | George Radcliffe |
 Deborah KerrMartha Radcliffe | Martha Radcliffe |
 Eric PortmanJeremy Clay | Jeremy Clay |
 Diane CilentoMrs. Heath | Mrs. Heath |
 Hermione GingoldLilly Harris | Lilly Harris |
 Peter CushingMr. Evan Wrack | Mr. Evan Wrack |
 Michael WildingMorris Brooke | Morris Brooke |
 Ronald HowardMr. Claridge | Mr. Claridge |
 Ray McAnallyDonald Heath | Donald Heath |
 Sandor ElèsManfridi | Manfridi |
 Wilfrid LawsonMr. Pom | Mr. Pom |
 Helen CherryMiss Osborne | Miss Osborne |
 Joyce CareyVictoria Hicks | Victoria Hicks |
 Diane ClareBetty | Betty |
 Frederick LeisterJudge | Judge |
 Martin BoddeyJason Roote | Jason Roote |
| PPeter WaynChauffeur | Chauffeur |