The unit learns the truth about a secret Torres has been keeping, as Deputy Chief Charlie Reid puts a focus on Intelligence.

Torres is haunted by his previous transgressions as Cook takes on a tense undercover assignment.

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

In the midst of a momentous rainstorm, Intelligence lends support to Officer Cook when she and her partner disagree about an investigation.

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

Atwater struggles to find balance as he teams up with a forensic psychologist on an armed robbery case.