- Robert Desmond - Page
- Geoffrey Hibbert - Dr. Cambus
- Stewart Guidotti - John
- Carl Bernard - Inspector Brand
- Katharine Page - Mrs. Harris
- Sidney Vivian - Mr. Marshall
- Ivor Dean - Barrington
- Andre Mikhelson - Martinetti
- Middleton Woods - Jonah
- Reginald Hearne - Auctioneer
- Edward Ogden - Det. Sgt. Johnson
- Frank Hawkins - Prison Officer
- Laurie Leigh - Shirley
- Angela Ramsden - Hazel
- Neil Wilson - Beat PC
- Jack Taylor - Uniformed Policeman
- John H. Watson - Uniformed Policeman
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Francis Searle
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Ronald Liles, Francis Searle
Capítulo disponible en las siguientes plataformas: