Probe

Hugh O'Brian

Hugh Lockwood

Elke Sommer

Heideline 'Uli' Ullman

Burgess Meredith

V.C.R. Cameron

Lilia Skala

Frieda Ullman

Angel Tompkins

Gloria Harding

John Gielgud

Harold L. Streeter

Kent Smith

Dr. Edward Laurent

Alfred Ryder

Cheyne

Ben Wright

Kurt van Niestat

Robert Boon

Felix Ernst

Albert Popwell

Dr. Griffin

A Martinez

Carlos Lobos

Byron Chung

Kuroda

Ginny Golden

Miss Keach

Jules Maitland

Reinhardt Brugge

David Ahdar

Hotel Clerk (uncredited)

Robert Cole

Waiter (uncredited)

John Daheim

Guard (uncredited)

Jan Daley

Lockwood's Girl (uncredited)

Joanna Frank

Stewardess (uncredited)

Gordon Bau

Makeup Supervisor

Joan Phillips

Hairstylist

James W. Payne

Set Decoration

Bill Brame

Editor

Dominic Frontiere

Music

Leslie Stevens

Teleplay, Producer

Russ Mayberry

Director

John M. Stephens

Director of Photography

Fred Harpman

Art Direction

Everett A. Hughes

Sound

Ruth Hancock

Wardrobe Coordinator