Probe
Hugh Lockwood
Heideline 'Uli' Ullman
V.C.R. Cameron
Frieda Ullman
Gloria Harding
Harold L. Streeter
Dr. Edward Laurent
Cheyne
Kurt van Niestat
Felix Ernst
Dr. Griffin
Carlos Lobos
Kuroda
Miss Keach
Reinhardt Brugge
Hotel Clerk (uncredited)
Guard (uncredited)
Lockwood's Girl (uncredited)
Stewardess (uncredited)
Waiter (uncredited)
Hotel Guest (uncredited)
Aaron Johannes (uncredited)
