Just back from her second tour in Afghanistan, NYPD Detective Chiara Corelli goes undercover to expose a ring of dirty cops. But when she's ordered to kill to prove her loyalty, she aborts the operation without having identified the leaders. Now, Corelli is the one exposed. With her brothers and sisters in blue ostracizing her, can she trust Detective P.J. Parker to watch her back?

Parker is the daughter of a vehement critic of the NYPD. But that doesn't stop her from wanting to work in the homicide division. And wanting to learn from the best. Unfortunately, Chiara Corelli is the best...even if she is the most hated detective in the department.

Without Parker, Corelli will be condemned to desk duty. Corelli is Parker's only chance to work in homicide. Will the two women put aside their fears and join forces to solve a brutal murder and identify the leaders of the dirty cops before they get to Corelli's family?