During the investigation of a brutal home invasion leaving a mother and her daughter dead, all signs point to the father as the main suspect. Ruzek must work alongside his estranged patrolman father. Burgess and Roman get through their first shift back on the beat. Alex Manette, Bailey Chase, David Eigenberg, Patrick Mulvey, Mark Pellegrino guest. (Herrmann from CF)
Antonio (Jon Seda) and his sister Gabriela (guest star Monica Raymund) go to the office of Adrian Gish (guest star Robert Knepper), the man they believe started the fire that killed Shay. Intelligence along with patrol officers Burgess (Marina Squerciati) and Roman (Brian Geraghty) put pressure on Gish to try and make him confess. Lindsay (Sophia Bush) approaches Voight (Jason Beghe) about returning to Intelligence when she realizes that the task force isn’t what she thought it would be. At the same time Desk Sgt. Platt (Amy Morton) is acting strange and has everyone curious as to why she’s being overly cheery, friendly and nice. Also starring Jesse Lee Soffer, Patrick Flueger, Elias Koteas, and LaRoyce Hawkins. Eamonn Walker, Charlie Barnett and Markie Post guest star.