S9, EP7 "Trust Me"
As the team works to bring down a drug ring, Voight builds trust with a new informant; however, it soon becomes clear she has a plan of her own.
S9, EP6 "End of Watch"
Ruzek reunites with an old colleague to take down a crime ring, but when things don't add up, Voight and Burgess do some investigating of their own.
S9, EP5 "Burnside"
As the team works to solve a deadly shooting in Burnside, Atwater realizes he has a very personal connection to the case.
S9, EP4 "In the Dark"
When Upton and Ruzek answer an emergency call to an abandoned house, their investigation leads them down a dark path.
S9, EP3 "The One Next to Me"
Halstead's past resurfaces when a former Army colleague is implicated in a deadly blast; as the FBI launches an investigation into Roy's disappearance, Upton feels the pressure of the secret she and Voight are sharing.
S9, EP2 "Rage"
When a P.D. informant is murdered, the team digs in to track down the perpetrator only to learn a shocking truth; Voight and Ruzek strategize to help Burgess.
S9, EP1 "Closure"
Burgess fights for her life as the team scrambles to find her kidnapper; Dep. Supt. Sam Miller is desperate to find her son's killer; Voight and Upton deal with the aftermath of their decision; Ruzek struggles with the pressure of the situation.