Heartbeat.

Professor Aristide (Basil Rathbone) runs a school for pickpockets in Paris. He takes Arlette even though she fails by only taking bread. Arlette decides to steal just enough to buy into a sham marriage to avoid the reform school. On her first try, however, a well-dressed man catches her lifting his stick pin and brings her to his fancy house. The two agree to a scheme to take Arlette to a diplomatic reception posing as the baron's niece.