"An American insurance investigator is sent to Rhodesia to investigate the mysterious death of a diamond broker who drowned whilst diving off the coast. The broker was insured for $1 million so the insurers are suspicious."
Dana Andrews
as Scott Walters
Jeanne Crain
as Marian Taylor
David Farrar
as Perry Henderson / Arthur Henderson
Patrick Barr
as Supt. Roberts
George Coulouris
as Capt. Malburn
Charles Goldner
as Martell
Wilfrid Hyde-White
as Pitt
Heather Thatcher
as Lady on the Niagara
Michael Mataka
as Vincent
Paul Carpenter
as Pan American Airways Clerk
Delphi Lawrence
as Pan American Girl
Mary Mackenzie
as Junior Secretary
Bee Duffell
as Irish Landlady
Alec Finter
as Waiter
Patrick Parnell
as Wireless Operator
John Salew
as Clerk
Walter Gotell
as Jim
Simone Silva
as Redhead (unconfirmed, uncredited)
Mary Merrall
as Mrs. Henderson
Charles Carson
as Skipper
Bill Fraser
as Smith, Hotel Clerk
Lionel Ngakane
as Servant
Robert Sansom
as Steward
Marcel Hellman
Producer
Edward B. Jarvis
Editor
Samuel Marx
Writer
Terence Verity
Art Direction
T. J. Morrison
George Marshall
Director
Erwin Hillier
Director of Photography
Mischa Spoliansky
Original Music Composer
S.K. Kennedy
Story
George Higgins
Still Photographer
Nell Taylor
Makeup Artist
Thelma Orr
Script Supervisor
Louis Levy
Music Director
Norman Warwick
Camera Operator
Jean Bear
Hairstylist
Harold V. King
Recording Supervision
Tony Kelly
Assistant Director
Peter Glazier
Assistant Art Director
Roger Good
G.R. Mitchell
Production Manager
Jeremy Summers
Third Assistant Director
Les Hammond
Sound Recordist