Larisa Polonsky

Alicia represents a stripper who was raped at a stag party and may have previously been abused by her husband. Alicia and her husband Peter discuss whether the children should be allowed to visit him while he's in prison, and Alicia finds incriminating pictures of Peter that her kids had hidden to save her from further pain.

Danny and Frank investigate a double murder with a Russian mobster family. Meanwhile, Erin finds herself heading up the most high profile case in town.

Severide tries to prove his suspicions about the arsonist's identity, Casey gets accustomed to his new lifestyle, and Dawson goes on a date with a regular from the bar.

Lt Severide is targeted by an arsonist, Battalion Chief Boden clashes with Gail McLeod the anniversary of Andy's death, Shay has suspicions, and Mari visits Mouch.

Severide is on edge after the arson attack, fearing what might be in store next. Shay and Dawson, meanwhile, plan to party away their problems.

Lt Casey must work with Voight and the Intelligence Unit, Shay grows increasingly excited about the prospect of motherhood, and everyone comes together to support the opening of Molly's.