The story gets away with a bang, as the wedding of Tony the Banker is rudely interrupted by Detective Moran and the bridegroom is dragged off to the station house. Tony is tried, convicted of counterfeiting and sent to prison. Moran becomes a police captain and, shortly afterward, runs up against the most baffling mystery of his career. Laura Bowers, a new boarder at the house where he lives, is the person that excites his curiosity. He sees her open a street door with a hairpin, but is forced to believe her when she assures him she is now leading an honest life. A love affair follows. After the wedding the couple go to their own home and Moran is shot while seated at a window. Tony threatened to get even when Moran was married and the news is brought that the Italian has escaped from prison. The fact is also established that he was killed while trying to resist capture, but finger marks outside the window prove that he is implicated in the shooting of Moran. The explanations are cleverly planned.