When seven-year-old Lori Gilbert goes missing, Police Chief Graci pulls Detective Jess King out of the Police Call Centre—the Siberia of the Force—and puts her on the case. The Challenge: find the missing girl. The Reward: Jess gets to head up the elite Major Crimes Task Force. Jess takes command of her resistant new squad as they track down leads that are already cooling. And when their number one suspect, a sex offender on the prowl, comes up with an airtight alibi, it seems that Jess’ last chance at redemption is already slipping away…

Homicide is trying to convict two major drug traffickers, the Barrata Brothers, of murder. But when the Drug Squad nails a wise guy named DeMarco for possession, they unwittingly take Homicide's only lead off the streets. Graci hands the mess to Jess, ordering her to solve the murders and bring peace to the cop shop. At the Don Jail, Jess identifies DeMarco's unlikely confidante, a biker named T-Bone, and promises him a break on his own assault sentence if he agrees to act as an undercover agent for the police. Jess puts her trust in her volatile informant, but when T-Bone goes AWOL, he jeopardizes the case and Jess’ reputation.