

I have not read much about 1929 Chicago other than the stock market crash. Prohibition cocktails and mentions of gangsters such as Al Capone and there is also a mention of the St.Valentine's Day Massacre and the rise of organized crime.

We meet a myriad of characters that work at the speakeasy, The Third Door owned by Signora Castallazzo, the customers, ie socialites finding some fun, ex-servicemen playing poker in a back room.

We see Gina Ricci, the main character, start a new job as a cigarette girl in a speakeasy, replacing a girl who was murdered. Murder Knocks Twice is a new series by Susanna Calkin that takes place in 1929 Chicago during prohibition. What secrets did Marty capture on his camera―and who would do anything to destroy it? As Gina searches for answers, she's pulled deeper into the shadowy truths hiding behind the Third Door. When Marty is brutally murdered, with Gina as the only witness, she's determined to track down his killer. But the staff buzzes with whispers about Gina's predecessor, who died under mysterious circumstances, and the photographer, Marty, warns her to be careful. She's enchanted by the harsh, glamorous world she discovers: the sleek socialites sipping bootlegged cocktails, the rowdy ex-servicemen playing poker in a curtained back room, the flirtatious jazz pianist and the brooding photographer―all overseen by the club's imposing owner, Signora Castallazzo. Gina Ricci takes on a job as a cigarette girl to earn money for her ailing father―and to prove to herself that she can hold her own at Chicago's most notorious speakeasy, the Third Door. The first mystery in Susanna Calkins' captivating new series takes readers into the dark, dangerous, and glittering underworld of a 1920's Chicago speakeasy.
