Jimmy McMillan (Chick Chandler) is innocently driving by the Hamilton Shops and Apartments when he is suddenly waylaid by Mary Rawlins (June Clyde), a hat shop owner and heiress to the Hamilton property. McMillan crashes the car at a dead end and is knocked unconscious; when he comes to, Mary is gone and there's two dead bodies found nearby - along with a robbed safe! The police have both McMillan and Mary under suspicion, and the two quickly unite to find out who the real killer is. The pair encounter aneccentric gallery of shopkeepers, including a knife-crazy antiques dealer, a furrier with a knack for taxidermy, a portrait photographer moonlighting as a lurid crime shutterbug, a vampish perfume shop proprietor with a jealous streak, a gun-toting silversmith and a menacing gardener - all of whom may have a motive for murder. The two are led through an intriguing maze of darkened cellars and private storerooms as the mystery unravels, revealing the real killer.