For Depression-Era detective Frank Palmer, the prominent radio host murdered in his own home is more than just another unsolved case. With evidence implicating two of the most powerful crime families in the city, Palmer delves further into the murder investigation, finding himself in the middle of a mob war for control of the void left by the recently departed kingpin. From alleyway shootouts to rooftop chases, Palmer becomes the next target, and unlikely assistance comes in the form of a mysterious urban legend that Palmer has encountered once before.