Nick Wechsler

The gang hatches a plan to repair its tarnished reputation in the eyes of former high-school classmates.

The gang's high school reunion has come at last; each of them recalls the events that shaped them into the people they are now.

A priest and parishioners block law enforcement from entering a church where two murder suspects are suspected of hiding; Rixton is caught in a lie with Voight.

The waitress is getting married, Dee is jealous that she's beating her to the altar, so she tries to derail the wedding.

Evidence from the case of a young woman who was shot to death confirms the Chicago P.D. has a serial killer on its hands; Voight welcomes Kenny Rixton to the team when Ruzek takes another assignment.

The investigation into the murder of a sex offender leads to a private police force operating independently of the Chicago PD; Halstead checks Jimmy's DNA to find out if he really is Lindsay's father.