Nathan and Dwight race to search for the trouble behind a series of exsanguinated corpses; Duke must convince his half-brother to leave Haven before he learns the truth of the Crocker family trouble.
Andy and Nick are called to the scene of a van that's been torched, to discover that it belongs to Father Jean Pierre a street priest who's been receiving death threats from the local drug kingpin; priest is reluctant to accept the officers' help.
With the senior officers off on another assignment, the rookies of 15 Division are on their own; a seemingly innocuous shift leads to a frenzied night in the station when an improperly searched prisoner pulls a gun on Chris in cells.
A prison transfer goes awry, and the convict flees custody; the officers of 15 Division are troubled to learn that it's Jon Grey, the pedophile they apprehended earlier in the year.
Nick and Andy go missing while working undercover to infiltrate a meth pipeline; Swarek and the other officers find themselves in the middle of a rescue operation; Andy works to deal with all the change going on around her.