Private eye Slim Callaghan is summoned to the country home of a Colonel Stenhurst, but the latter is murdered before he can talk to the detective. Was one of the Colonel's three daughters responsible?
| Actor | Role |
|---|---|
 Michael RennieSlim Callaghan | Slim Callaghan |
 Moira ListerCorinne Alardyse | Corinne Alardyse |
 Faith BrookViola Alardyse | Viola Alardyse |
 Joy SheltonEffie | Effie |
| PPatricia GoddardPatricia Alardyse | Patricia Alardyse |
 Nigel PatrickLucien Donnelly | Lucien Donnelly |
 Paul CarpenterWindy Nicholls | Windy Nicholls |
 Barry JonesInspector Gringall | Inspector Gringall |
 Sydney TaflerMaysin | Maysin |
| RRoy RussellCol. Jarvis Stenhurst | Col. Jarvis Stenhurst |
| JJohn EnglandWilkie | Wilkie |
 Marie NeyHonoria Wymering | Honoria Wymering |
 J.H. RobertsSallins | Sallins |
| HHarry BrooksRosy | Rosy |
 Tony QuinnPatrick | Patrick |
| CChick RolfeGeorge | George |