Carlos Rogelio Diaz

Manning and her 3-year-old patient are trapped in a helicopter as the toddler's stats decline; Charles isn't sure Choi's alcoholic patient with liver failure has quite hit rock bottom.

Dr. Charles and Caroline set some major plans, while Ava fights to keep her relationship with Connor. Agent Lee then informs Will of news that may put his life in danger.

Halstead hides the theft of his gun from Manning, while Hank struggles to keep his emotions in check when he sees an old patient.

After a major accident at O'Hare, the ED is concerned one of their own is in mortal danger. Will's proposal for a safe injection site goes to the board for consideration. Meanwhile, Natalie and Goodwin become concerned for Gwen.

Marcel helps Blake replace a patient's liver; Taylor tries to prove herself; Halstead continues to pursue the truth about Cooper; Choi gets closer to returning to life in the ED.

On a busy night, Dr Reese deals with having to pronounce several patients dead. April is pressured to slow down, and Dr Charles has important news for Dr Latham.