S2, E15: It's a miracle when a trauma patient survives the trip to the hospital, putting the pressure on Dr. Rhodes to keep the man alive. Dr. Choi and Dr. Manning have difficulty diagnosing the location of infection in a paralyzed patient. Dr. Reese must find purpose for a grieving widower who relies on a superhero costume. Meanwhile, April pushes Dr. Halstead to use unproved medications to help a patient with no other options.