It's 1927. Letty Hart's father is long gone, but his old winery provides a meager wage and a legal livelihood for selling sacramental wine. But when that contract goes bust, Letty stumbles upon a desperate option: her father's hidden cellar--and enough liquor to tempt Letty to bootleg the secret stash. In an underworld dominated by merciless men, Letty is building an empire.

Officer Annabel Forman deserves to be the first female detective in the LAPD. But after two years on the force, she's still consigned to clerical work and policing dance halls. When Annabel connects a series of unsolved murders to bootlegging, it's a chance at a real investigation. Under the thumb of dismissive male superiors, Annabel is building her case.

As their formerly uncompromised morals erode, Letty and Annabel are on a collision course--and determined to prove they're every bit as ruthless and strong-willed as the powers that be who want to take them down.