Desmond Gray

Firehouse 51 responds to the scene of a harrowing blaze that endangers the lives of many, including one of the Chicago family.

Hank and the team investigate the execution-style killing of a child whose father was mixed up with a notorious gang.

Dr. Charles and Dr. Halstead sink their teeth into a bloodthirsty case. Dr. Marcel and Maggie throw a traditional crayfish boil for the staff, and a new relationship blossoms while another is left on rocky ground.

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.

When a young woman with HIV symptoms and no insurance refuses to take the test, Goodwin and Dr Choi attempt to treat her without taking a toll on the hospital's resources.

Halstead is criticized for making an unauthorized move to treat his pregnant patient, and Choi becomes personally invested when treating a homeless veteran. Meanwhile, Rhodes and Bekker deal with a patient who desperately needs a liver transplant.