After a year long absence, Dr. A.J. Aquino (guest star J.R. Ramirez, "House of Payne") returns to Denver Memorial, but before he can rejoin the staff, the Chief insists that he make peace with Dr. Bandari (Necar Zadegan). Emily (Mamie Gummer) is tasked with treating a patient who claims to be a psychic, and is convinced that her tarot cards predict her own impending death. Elsewhere, Cassandra (Aja Naomi King) and Dr. Bandari treat a patient who needs a lung transplant, but Micah's (Michael Rady) discovery of a new medical issue leaves the patient with a tough decision. Meanwhile, Emily decides to test her theory that Will (Justin Hartley) was jealous of her recent date, so Tyra (Kelly McCreary) offers to teach Emily how to flirt. D.B.