Erin Noel Grennan

In Harm's Way. Shaw and Riley suspect a sport star's killer got the wrong target. Baxter's daughter confesses a family secret that could impact his re-election campaign.

Bound. Airplane stowaways are brought to the hospital with significant injuries, Cornelius Rhodes (D.W. Moffett) is honored after making a large donation to the hospital, Dr. Manning's mother-in-law (Annie Potts) misunderstands Dr. Halstead's intentions.

The pressure on Firehouse 51 is at an all-time high as the internal affairs investigation into the handling of a recent fire picks up steam. Just when it appears that game-changing evidence comes to light that would serve to bail out Chief Boden, new twists emerge that put his head right back on the chopping block.

Members of the firehouse are frustrated with their inability to help Chief Boden, whose job is on the line pending an internal investigation in the aftermath of a complicated call to a fire. Meanwhile, Lt. Severide struggles to accept his smaller role and adjusts to the presence of Capt. Patterson (guest star Brian White), his new commanding officer. Dawson shakes things up.

Bull aims to raise reasonable doubt among the jurors in his friend Nathan's trial, when he is tried for his wife's murder.