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Season 12
22 episodes
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E01
A month after Voight's close brush with death, Intelligence is overwhelmed with cases as they catch a high-stakes drug bust.
E02
After tragedy strikes Intelligence, the unit must persevere during an adrenalized manhunt across the city.
E03
Atwater struggles to find balance as he teams up with a forensic psychologist on an armed robbery case.
E04
ASA Chapman assists Intelligence with a sensitive investigation that drudges up painful memories for Voight.
E05
In the midst of a momentous rainstorm, Intelligence lends support to Officer Cook when she and her partner disagree about an investigation.
E06
Burgess is put to the test as she looks to make an advancement in her career.
E07
Torres is haunted by his previous transgressions as Cook takes on a tense undercover assignment.
E08
The unit learns the truth about a secret Torres has been keeping, as Deputy Chief Charlie Reid puts a focus on Intelligence.
E09
Cook turns to her family when Intelligence faces administrative roadblocks that threaten a kidnapping investigation.
E10
An unexpected visitor causes disruption for Ruzek and Burgess amidst an emotional investigation involving an unidentified young girl.
E11
With the suspects still at large and conditions worsening underground, first responders race against the clock to reach the trapped victims, while the investigation into the assailants comes into focus.
E12
A chilling discovery leads Torres to go undercover at the juvenile detention center where he stayed as a teen.
E13
Atwater's struggling community project is threatened further by an escalating street war.
E14
Ruzek grapples with his father's worsening condition while Intelligence searches for an elusive serial killer.
E15
Voight questions Deputy Chief Reid's motives in enacting a Violence Reduction Initiative across a neighborhood where numerous gangs are fighting for territory.
E16
Burgess's memory recall is put to the test following a deadly incident at her local diner.
E17
The search for the suspect in a shooting uncovers a surprising personal connection to Atwater and Val, raising questions about their relationship status.
E18
Voight and Chapman team up to investigate Deputy Chief Reid's shadow dealings as Reid assigns Intelligence to a carjacking case.
E19
Cook works her first CI during a vicious robbery-homicide case involving a star college athlete.
E20
Ruzek witnesses a tragic accident on an icy bridge, leading Intelligence into a dark, sinister case involving sex trafficking.
E21
The showdown with Deputy Chief Reid intensifies when Intelligence narrows in on Ortero.
E22
Forced to cease operations while under investigation by Internal Affairs, Intelligence goes off-book to bring down Reid. Ruzek and Burgess consider delaying their nuptials amid the uncertainty.