It was a straight crime drama with the unusual ending. Most of the movie was the hiring and planning of the theft, and after the robbery 1 by 1 all of the thieves were eliminated. It looked like E G Robinson was going to share the jewels with only the 1 remaining thief. When the last thief was arrested he had the diamond case of course it was empty and that's when the movie cut to the restaurant with EG Robinson and the bank employee.