Tim Frank

After a neighbor is stabbed, Dr. Choi (Brian Tee) enlists the help of April (Yaya DaCosta) to figure out who is the real cause of the incident. Dr. Bekker (Norma Kuhling) and Dr. Rhodes (Colin Donnell) expertise is put to the test when Noah (guest star Roland Buck III) misdiagnoses a patient. Dr. Charles (Oliver Platt) is put in an uncomfortable position when Dr. Reese's (Rachel DiPillo) estranged father (guest star Michel Gill) comes to him as a patient without her knowledge. Meanwhile, Dr. Manning (Torrey DeVitto) rushes to save a baby with whooping cough.

Chief Boden (Eamonn Walker) meets his new neighbor (guest star Ilfenesh Hadera), who asks him for a favor that leads to serious consequences. Severide (Taylor Kinney) takes offense to being treated like a candidate by Captain Patterson (guest star Brian White) by undermining him during a call, and the situation reaches a boiling point. Cruz (Joe Minoso) receives a surprise visit from his past when Freddie (guest star Ralph Rodriguez), a gangbanger who knows Cruz's brother Leon, comes to visit and ask for a favor. Elsewhere, the team is called to a harrowing scene of an 18-wheeler and receive a thanks in the form of tickets to see the band Rush, much to Mouch (Christian Stolte) and Herrmann's (David Eigenberg) delight.