Diane Cilento

Character: Margo Wendice

Laurence Harvey

Character: Tony Wendice

Hugh O'Brian

Character: Mark Halliday

Cyril Cusack

Character: Chief Insp. Hubbard

Nigel Davenport

Character: Lesgate

Glynn Edwards

Character: Sgt. Edwards

Garry Marsh

Character: Lionel

Joanne Dainton

Character: Barmaid

Michael Gaunt

Character: Det. Sgt. Williams

Arthur Hewlett

Character: Hotel Clerk

Carole Ann Ford

Character: