Danny believes a serial killer is on the loose when two separate murder victims are identified as members of a group charged with a gang rape. Meanwhile, Erin’s ex-husband, attorney…

Patterson fills in for Boden, who’s trying to clear his name. Severide learns where Serena may be hiding. Herrmann and Otis give Freddie a job that keeps him close by….

Herrmann fights for his life after being stabbed; Cruz hits the streets to find Freddie. Mouch proposes to Trudy. The crossover continues on Chicago Med S01E05 Malignant (II) and Chicago…

A tornado threatens Chicago. Chili makes a major mistake, which causes Brett to report her to Boden. Otis asks Dawson to help him solve his women troubles. Severide assists a…

Freddie’s father begs Herrmann to forgive his son’s assault. Casey discovers that a makeshift shelter housing people displaced by the tornado may close. Casey attends a fund-raiser at the request…

Boden’s new neighbor asks him for a favor that could have serious repercussions. Severide is upset when he’s treated like a candidate by Patterson. Cruz is visited by a gangbanger…

Boden suspects his neighbor is setting him up; Severide, who’s still on probation, receives a surprise visit from his father and also learns something about Patterson that could be a…

Boden believes Maddox is behind Serena’s accusations. Severide reaches out to Jamie, who’s Maddox’s lawyer, in an attempt to help. Patterson questions whether Boden can remain chief. Brett and Chili…