Captain William Parker's mob squad is first on the scene after two mobsters are gunned down in a restaurant. It turns out that the two were going to testify against their mob bosses and the Chief of Police tells Parker to back off. Never one to obey orders, Parker orders his men to round up up anyone with links to the mob and bring them in for questioning. When one them mentions photos, the penny drops - Hecky Green was blackmailing Bugsy Siegel because he had photos showing Siegel killing an underling. Joe Teague has a pretty good idea who the photographer is - his ex-wife Jasmine - but he's not the only one who thinks she might be involved. When they track down the waiter who tipped the mobsters about the stool pigeons being in the restaurant, they also have to protect him.
—garykmcd