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.

Lt Severide is targeted by an arsonist, Battalion Chief Boden clashes with Gail McLeod on 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.

The shooting of a child in their neighbourhood forces Cruz and his brother to think about the gang, Isabella gets Mills to dress up for a gala, Casey feels sad he will be seeing Dawson less, and Shay gets in deeper with Devon.

Boden tries to keep the firehouse from closing, the romance between Dawson and Casey grows, Cruz worries about his brother's safety, and Severide and Katie make up for lost time.