When former detective Trevor Finn Finnegan became a PI, he adopted a new mandate: catch the LAPDs worst in the act. While on surveillance, Finn tails two potentially dirty cops: Detective Martin Riley and Finns ex-partner, Detective Sally Munoz. Things take a deadly turn when an assailant executes Riley and wounds Munoz. Munoz needs Finn to help find Rileys killer but doing so could blow his cover. Finns reluctance ends when an ex-LAPD detective is murdered. To prevent more bloodshed, Finn and Munoz will have to bury their past, trust each other, and come face-to-face with secrets that could destroy them both.