Chicago had Al Capone and Frank Nitti. Galveston had Beach Gang leaders Ollie Quinn and the Maceos vs. rival Downtown Gang leader Johnny Jack Nounes. In this soft-boiled 1920s mystery inspired by actual events, young society reporter Jasmine (Jazz) Cross longs to cover hard news, but she's stuck between two clashing cultures: the world of gossip and glamour vs. gangsters and gamblers. After Johnny Jack Nounes is released from jail, all hell breaks loose: Prohibition Agent James Burton’s life is threatened and he must go into hiding for his own safety. Then the Downtown Gang frames Burton for a bar owner's death, and he and Jazz work together to prove his innocence. Johnny Jack blames her half-brother Sammy Cook, owner of the Oasis speakeasy, for his arrest and forces him to work overtime in a variety of dangerous mob jobs as punishment. When a bookie is murdered, Jazz looks for clues linking the two murders and delves deeper into the underworld of gambling: poker games, slot machines and horse-racing. Meanwhile, Jazz tries to keep both Burton and her brother safe, and alive, while they face off against each other, as well as a common enemy.