A London solicitor and a French detective investigate the mysterious death of an elderly woman suspected of being poisoned.
Oskar Homolka | Inspector Hanaud |
Robert Urquhart | Jim Frobisher |
Yvonne Furneaux | Betty Harlowe |
Josephine Griffin | Ann Upcott |
Harold Kasket | Boris Wabersky |
Ruth Lodge | Nurse |
Pierre Lefevre | Detective Maurice Thevenet |
Pierre Chaminade | Detective Moreau |
Jacques Cey | Police Commissaire Giradot |
Anthony Nicholls | Lawyer Jarrett |