Overview
When Lindsay is tipped off about a grieving father looking to avenge his daughter's death, Olinsky goes undercover as a hitman-for-hire. With Gang Intelligence lacking enough evidence to arrest the original gangbanger in question, the team works to reinvestigate the case. Meanwhile, Ruzek comes back after finishing his undercover assignment only to have Voight knock him down to patrol duty.
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4 - 1The Silos September 21, 2016 -
4 - 2Made a Wrong Turn September 28, 2016 -
4 - 3All Cylinders Firing October 05, 2016 -
4 - 4Big Friends Big Enemies October 12, 2016 -
4 - 5A War Zone October 26, 2016 -
4 - 6Some Friend November 09, 2016 -
4 - 7300,000 Likes November 16, 2016 -
4 - 8A Shot Heard Round the World November 16, 2016 -
4 - 9Don't Bury This Case (II) January 03, 2017 -
4 - 10Don't Read the News January 04, 2017 -
4 - 11You Wish January 11, 2017 -
4 - 12Sanctuary January 18, 2017 -
4 - 13I Remember Her Now February 08, 2017 -
4 - 14Seven Indictments February 15, 2017 -
4 - 15Favor, Affection, Malice or Ill-Will February 22, 2017 -
4 - 16Emotional Proximity (II) March 01, 2017 -
4 - 17Remember the Devil March 22, 2017 -
4 - 18Little Bit of Light March 29, 2017 -
4 - 19Last Minute Resistance April 05, 2017 -
4 - 20Grasping for Salvation April 26, 2017 -
4 - 21Fagin May 03, 2017 -
4 - 22Army of One May 10, 2017 -
4 - 23Fork in the Road May 17, 2017
