Assistant State's Attorney Chapman assists Intelligence with a sensitive investigation that drudges up painful memories for Voight.

Burgess is put to the test as she looks to make an advancement in her career.

Cook turns to her family when Intelligence faces administrative roadblocks that threaten a kidnapping investigation.

Intelligence makes a gruesome discovery that leads Torres to go undercover at the juvenile detention center where he served time as a teen.

Voight questions Deputy Chief Reid's motives in enacting a Violence Reduction Initiative across a neighborhood where numerous gangs are fighting for territory.

Voight and Chapman work together to uncover Deputy Chief Reid's shadow dealings as Reid assigns Intelligence to a carjacking case.

The showdown with Deputy Chief Reid intensifies when Intelligence narrows in on Otero.