- Writer:
- Giles Cooper
- From the novel 'Tour de Force' by:
- Christianna Brand
- Production:
- Raymond Raikes
- An Air Hostess:
- Eva Huszar
- Louvaine Barker (Louli), a novelist:
- Denise Bryer
- Inspector Cockrill:
- Norman Wooland
- The Storyteller:
- Gabriel Woolf
- Fernando Gomez, Courier for Odyssey Tours:
- Howard Marion-Crawford
- Mr. Cecil of Christophe et Cie, Couturiers:
- Heron Carvic
- Miss Trapp, who lives in Park Lane:
- Madeleine Christie
- Vanda Lane, who lives in St. John's Wood:
- Delta Rachos
- Leo Rodd, former concert pianist:
- Noel Johnson
- Helen Rodd, his wife:
- Marjorie Mars
- A Barman:
- Armand Guinle
- A Waiter:
- Harold Young
