Richard Todd

as Williams, alias Ward McKenzie Prescott Jr.

Anne Baxter

as Kimberley Prescott

Herbert Lom

as Police Commissar Vargas

Faith Brook

as Elaine Whitman

Alan Tilvern

as Carlos

Alexander Knox

as Chandler Bridson

Douglas Fairbanks Jr.

as Self - Epilogue (uncredited)

Thelma D'Aguiar

as Maria