: The team eventually identifies the killer, a man named Lewis, through Polly’s identification. Notable Character Moments
. Polly's need for a fresh start in St. Louis and Roman's potential departure underscore a theme of leaving Chicago behind to escape the cycle of violence. Voight and Justin storyline concludes in the following episode, "Start Digging" Chicago PD Season 3 Episode 22 Recap: She's Got Us 17 May 2016 — chicago pd 3x22 hot