Cast
Margaret Dumont
Mrs. Hendricks (uncredited)
Henry Stephenson
Russian Ambassador Gregory
Murray Kinnell
de Segroff
Larry Steers
Partitioner (uncredited)
William Newell
Carter's Receptionist (uncredited)
Harry C. Bradley
Cashier (uncredited)
Max Barwyn
Boris Stronskoff - Russian Singer (uncredited)
Guy Usher
Ship's Captain (uncredited)
Samuel S. Hinds
John Carter, Assistant Secretary of War
Leonard Mudie
Roberts
Mickey Rooney
Country Boy (uncredited)
Johnny Arthur
Code Room Clerk (uncredited)
Edward Earle
Man in Code Room (uncredited)
William V. Mong
Hotel Desk Clerk (uncredited)
William Powell
Lt. William 'Bill' Gordon / Anson Meridan
Mary Forbes
Lady Cavendish (uncredited)
Tom Dugan
Agent Patrick O'Reilly (uncredited)
Melville Cooper
Doorman (uncredited)
Howard Hickman
G-Man
Hedwiga Reicher
De Segroff's Associate (uncredited)
John Harmon
Telegrapher (uncredited)
Binnie Barnes
Olivia Karloff
Charley Grapewin
Prof. Martin
Frank Lackteen
Customs Officer in Mexico (uncredited)
David Burns
German-Speaking Bellhop (uncredited)
Cesar Romero
Capt. Nicholas 'Nikki' Nieterstein
Charles Coleman
Café Doorman (uncredited)
Frank O'Connor
Officer (uncredited)
Winter Hall
Chaplain (uncredited)
Belle Mitchell
Mexican (uncredited)
Lynton Brent
Decoder (uncredited)
Cyril Ring
Orderly (uncredited)
Michael Vallon
Orderly (uncredited)
Leonid Snegoff
Kaieneff (uncredited)
Rosalind Russell
Joel Carter
Milburn Stone
Carter's Aide (uncredited)
Lionel Atwill
Maj. William Brennan
Sterling Holloway
Taxi Driver (uncredited)
Rudolph Anders
Radio Operator (uncredited)
Sam Ash
Mexican (uncredited)
Al Bridge
Sergeant (uncredited)
Gino Corrado
Code Room Clerk (uncredited)
Frank Reicher
Dr. R.A. Jackson
Charles Trowbridge
Secretary of War Baker
Sid Silvers
Recruiter (uncredited)
Sidney Bracey
Jackson's Assistant (uncredited)
James P. Burtis
Private (uncredited)
Bernadene Hayes
Bobbie Burns (uncredited)
Edgar Dearing
1st Military Policeman (uncredited)
Hans Fuerberg
German Torpedo Man (uncredited)
Theodore von Eltz
Desk Clerk Assistant (uncredited)
James Flavin
2st Military Policeman (uncredited)
Morgan Wallace
Gardner (uncredited)
Lee Kohlmar
Tailor (uncredited)
Bert Moorhouse
2nd Lieutenant (uncredited)