A decoding expert tangles with enemy spies.
as Lt. William 'Bill' Gordon / Anson Meridan
as Joel Carter
as Olivia Karloff
as Maj. William Brennan
as Capt. Nicholas 'Nikki' Nieterstein
as John Carter, Assistant Secretary of War
as Russian Ambassador Gregory
as Dr. R.A. Jackson
as Prof. Martin
as Roberts
as G-Man
as Secretary of War Baker
as de Segroff
as Mrs. Hendricks (uncredited)
as Lady Cavendish (uncredited)
as Agent Patrick O'Reilly (uncredited)
as Bobbie Burns (uncredited)
as Chaplain (uncredited)
as De Segroff's Associate (uncredited)
as Carter's Aide (uncredited)
as Desk Clerk Assistant (uncredited)
as Recruiter (uncredited)
as Jackson's Assistant (uncredited)
as 1st Military Policeman (uncredited)
as 2st Military Policeman (uncredited)
as German Torpedo Man (uncredited)
as Taxi Driver (uncredited)
as Hotel Desk Clerk (uncredited)
as Country Boy (uncredited)
as Doorman (uncredited)
as Radio Operator (uncredited)
as Colonel Petroff (uncredited)
as Gardner (uncredited)
as 2nd Lieutenant (uncredited)
as Customs Officer in Mexico (uncredited)
as Mexican (uncredited)
as Decoder (uncredited)
as Orderly (uncredited)
as Sailor (uncredited)
as Partitioner (uncredited)
as Carter's Receptionist (uncredited)
as Code Room Clerk (uncredited)
as Man in Code Room (uncredited)
as Cashier (uncredited)
as German-Speaking Bellhop (uncredited)
as Boris Stronskoff - Russian Singer (uncredited)
as Café Doorman (uncredited)
as Officer (uncredited)
as G-Man (uncredited)
as Kaieneff (uncredited)
as Ship's Captain (uncredited)
as Diplomat (uncredited)
as Tailor (uncredited)
as Private (uncredited)
as Sergeant (uncredited)
as Army Officer (uncredited)
as Butler (uncredited)
as Pvt. Dean (uncredited)
as Red Cross Nurse (uncredited)
as Kesterman (uncredited)
as Telegrapher (uncredited)
as Barber (uncredited)
as Drug Store Clerk (uncredited)
