It doesn't seem to matter just how many times "Blackie" (Chester Morris) helps the police, they alway jump to the conclusion that he's the guilty party whenever there is a body! This time, he leaves a laundry only for the owner to be found dead. "Insp. Farraday" (Richard Lane) and his nice but dim "Sgt. Matthews" (Frank Sully) are on the case and with the blame looming, it falls to our erstwhile crook and his pal "The Runt" (newcomer Sid Tomack) to explore the underground antics of the Chinese community and find out if it's a dodgy gambling racket, or maybe some seamy private dancing, or perhap...