
Philo is in Vienna working for the US Government to see if Archer Coe is selling aircraft designs to foreign powers. He grabs the plans with Archer's signature, but is captured by police before he can escape. Deported he comes back to America and plans to confront Archer, but Archer is found dead in his locked bedroom with a gun in his hand. While it looks like a suicide, Vance knows better and the coroner finds that Archer has been shot, hit with a blunt instrument and stabbed - making suicide unlikely. But Vance is on the case and is looking to see if government secrets have been sold and who has murdered Coe. This is a remake of "The Kennel Murder Case" using aircraft designs and espionage instead of Chinese porcelain and dog shows.
Genres:

James Stephenson as Philo Vance

Margot Stevenson as Hilda Lake

Henry O'Neill as Markham

Edward Brophy as Ryan

Sheila Bromley as Doris Delafield

Ralph Forbes as Tom McDonald

Donald Douglas as Philip Wrede

Martin Kosleck as Gamble

Jimmy Conlin as Dr. Doremus - Coroner

Edward Raquello as Eduardo Grassi

Creighton Hale as Du Bois - Fingerprint Man

Harry Strang as Hennessey - Markham's Assistant

Richard Kipling as Archer Coe

Wedgwood Nowell as Brisbane Coe

Bo Ling as Ling Toy

Terry as MacTavish (uncredited)

Herbert Anderson as First Reporter (uncredited)

Henry Blair as Hans Snauble (uncredited)

Egon Brecher as Austrian Judge (uncredited)

Harry Burns as Capt. Lugo (uncredited)

Yakima Canutt as Sorrento Sailor (uncredited)

Nat Carr as 2nd Photographer (uncredited)

Glen Cavender as Train Porter Asked to Send Telegram (uncredited)

Loia Cheaney as Markham's Secretary (uncredited)

Frederick Giermann as Austrian Sergeant (uncredited)

Eddie Graham as Coroner's Assistant (uncredited)

John Harron as Third Reporter (uncredited)

Stuart Holmes as Hertz (uncredited)

William Hopper as Clerk at Hotel Nino in Chicago (uncredited)

Olaf Hytten as Charles (uncredited)

George Irving as Avery (uncredited)

Marion Lessing as Mrs. Fritz Snauble (uncredited)

Rolf Lindau as Aeronautics Department Sentry (uncredited)

Frank Mayo as Doorman (uncredited)

George Reeves as Steamship Clerk (uncredited)

John J. Richardson as 4h Reporter (uncredited)

Cliff Saum as Investigator Snitken (uncredited)

Hans Schumm as Nazi Officer at Dock (uncredited)

Frank Wilcox as 2nd Reporter (uncredited)

Jack Wise as 1st Photographer (uncredited)

Maris Wrixon as Long-Distance Operator (uncredited)

Henry Zynda as Austrian Lieutenant (uncredited)
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