The movie starts very melodramatically, with a young woman in bed, tended by her mother, apparently dying. The reason for her deterioration is never stated, though it has to do with her relationship with some man. The acting here is poor. Her father (get this, his name is Boris Karlov, played by Warner Oland, acting like an evil Charlie Chan) enters, and demands the name of the man responsible, but his daughter refuses. A necklace, The Drums of Jeopardy, falls from under the bed covers, which he recognizes as belonging to the Petrovs, and vows revenge.
The movie and acting get better in the second act as the Petrovs come to America, fleeing the Bolshevik revolution. Karlov, working for the Bolsheviks, is in America already, and waiting for them. The Petrov sons escape Karlov twice, and flee to a country mansion on a dark and stormy night. Karlov and his goons are right behind.
This is an very 1930s movie with plot elements, and plot holes, typical of the period. The escaping Petrovs meet and are aided by a rich New York family. Karlov has a bullet-proof vest that defies Newton's third law of motion.
Clara Blandick, playing the matron of the New York family, shines while providing some humor.