After a botched undercover job, Ruzek (Patrick Flueger) is under scrutiny by the new Street Deputy Crowley (guest star Barbara Eve Harris) who will determine his future with the unit. A suspicious person call turns into a murder investigation when Burgess (Marina Squerciati) and her temporary partner Price (guest star Travis A. Knight) discover the body of a dead man in an SUV. After Mouse (guest star Samuel Hunt) identifies the victim as the owner of a security company, the unit soon realizes there might be more to his story. Halstead (Jesse Lee Soffer) and Lindsay (Sophia Bush) take a step forward in their relationship. Jason Beghe, Jon Seda, Elias Koteas, LaRoyce Hawkins, Amy Morton and Brian Geraghty also star. Eamonn Walker, Oliver Platt, S. Epatha Merkerson, Nick Gehlfuss, Vincent Shuster and Madison McLaughlin guest star.