Nick Wechsler

While Hal and Lois take a romantic break, Reese throws a party at home, but the delinquent friends of Francis gatecrash and hold the boys hostage.

After the body of a young woman is found with multiple gunshot wounds, Intelligence identify links to other deaths and realise they are dealing with a serial killer. Lindsay finally meets her biological father.

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

When a sex offender is found dead and mutilated, Intelligence look into a private police force that may be covering up illegal activities. Meanwhile Halstead runs a DNA check on Jimmy and discovers he is not Erin's father.

Kevin takes the twins to the cabin in hopes of proving himself as a father.

The investigation of a jogger's brutal murder in a park is blocked by a church offering sanctuary to the prime suspects. Rixton goes behind Voight's back to question a gang member in relation to the case.