It looks to be the return of a serial killer when two bodies turn up dead. With the knowledge that he kills in sets of three, Chief Pope charges Brenda…

Daphne is overcome with rage when her mooching brother visits for the wedding. She also begins to believe that Niles may be more than just a friend.

The accidental shooting of two children by a 14-year-old hired killer leads to a drug dealer and a real estate agent.

Truck and squad are called to aid in a massive all-city response when an old, ill-equipped factory-turned live/work space quickly turns into a firestorm, trapping countless unsuspecting victims. The dire…

Severide agrees to a bone marrow donation but a work accident throws everything into flux. Casey and Dawson try to find harmony at home. Meanwhile, Otis and Mouch decide to…