Peter Ustinov

Marcus Pendleton / Caesar Smith

Maggie Smith

Patty Terwilliger Smith

Karl Malden

Carlton J. Klemper

Bob Newhart

Willard C. Gnatpole

Robert Morley

Caesar Smith

Cesar Romero

Customs Inspector

Elizabeth Counsell

Miss Glyn (uncredited)

Margaret Courtenay

Mrs. Hubbard