aAfter nine months as a cigarette girl at the Third Door, one of Chicago's premier moonshine parlors, Gina Ricci feels like she's finally getting into the swing of things. The year is 1929, the Chicago Cubs are almost in the World Series, neighborhood gangs are all-powerful, and though Prohibition is the law of the land, the Third Door can't serve the cocktails fast enough. Two women in particular are throwing drinks back with abandon while chatting up a couple of bankers, and Gina can't help but notice the levels of inebriation and the tension at their table. When the group stumbles out in the early morning, she tries to put them out of her head. But once at home that night, Gina's sleep is interrupted when her cousin Nancy, a police officer, calls-- she's found a body. Gina hurries over to photograph the crime scene, but stops short when she recognizes the body: it's one of the women from the night before. Could the Third Door have served the woman bad liquor? Or, Gina wonders, could this be murder? As the gangs and bombings draw ever closer, all of Chicago starts to feel like a warzone, and Gina is determined to find out if this death was an unlucky accident, or a casualty of combat.