Three Apaches - a cadre of controversial, adrenaline-junkie former NYPD cops, first introduced in Lorenzo Carcaterra's 1997 novel - reunite to continue their battle against crime. Their new case opens with the machine-gun murder of innocent bystanders in a Manhattan restaurant. This incident ultimately propels the heroes into an investigation of a Colombian drug cartel responsible for selling and distributing millions of kilos of cocaine on shores. Joining Boomer, Dead-Eye, and Reverend Jim in this mission are three new Apaches - Ash, a wounded female Hispanic cop with a specialty in arson investigations; Quincy, an HIV-positive recruit who is a specialist in forensics; and Buttercup, a retired police dog - a Neapolitan bull mastiff who is a gold-shield detective, highly decorated for his skills at sniffing out legal drugs. Together, they take on the most thrilling and perilous case of their careers.