A vigilante posts a video online of a man, previously locked up for statutory rape, being beaten and burned alive; Lindsay encounters some personal and professional problems.
Intelligence investigate a bank robbery which leads them to a teenage gang run by an older criminal. Another detective from the robbery-homicide division tries to take over the investigation.
Grasping for Salvation
The murder weapon in the killing of a teenage boy is linked to a case Voight worked on 17 years ago; the victim's father wants Area Central Homicide to take the case.
Last Minute Resistance
The Intelligence unit bands together to help find the perpetrator when Burgess' sister is brutally assaulted. Burgess and Erin Lindsay head undercover to try and draw out the suspects.
Little Bit of Light
The investigation leads Intelligence to one of Chicago's wealthiest families after a nighttime photographer is murdered over a piece of mysterious footage; Burgess' sister Nicole visits the district and presents an icy attitude toward Ruzek.