
Ambitious young cops try to prove themselves in their high-stakes careers, in which the smallest mistake can have deadly consequences. At the core of the close-knit group is perfectionist Andy McNally (Missy Peregrym), whose father was a homicide detective before he burned out on the job. The series follows Andy and her four colleagues -- Dov Epstein, Gail Peck, Traci Nash and Chris Diaz -- as they experience the trials, triumphs and tribulations of police work, as well as its effect on their personal lives.
A heat wave makes life on the streets even more perilous for the rookies; the squad discovers that a serial rapist may be on the loose; during a blackout, Andy must take down a vicious predator alone.
Chris and Andy face a tough decision while investigating a vicious beating; Sam and Luke get competitive during a retraining exercise.
15 Division starts a city-wide search for an abducted 9-year-old girl; disturbing evidence is uncovered during an interrogation.
An inmate escapes during a prisoner transport; Gail and Dov try to help a man with amnesia; Traci and Chris help reconstruct notes missing from a court case.