When war is declared in 1914, glamorous Russian Carla Vanirska manages to get to Vienna from Luxembourg, with the help of Captain Rudolph Ritter of the Austrian army. Meanwhile, Ritter is assigned to detect the identity of a spy.
Constance Bennett
as Carla Vanirska
Gilbert Roland
as Capt. Rudolph Ritter
Edward Ellis
as Maj. Lieber
Lucien Prival
as Sgt. Probert
Ben Hendricks Jr.
as Sgt. Probert
Leonid Snegoff
as Pvt. Muller
John Wray
as Mitika, the Gypsy Contact
Mischa Auer
as Agent Lehan
Evelyn Carter Carrington
as Frau Stengel
Sam Godfrey
as Franz
