Evan Gallico visited the st Jose hospital after breaking his arm during a field trip. Shawn sees him and due to his exactly similar looks to Steve Murphy ,approaches him . The episode proceeds with the reveal that Evan has cancer and has only 5 months to live. Evan knowing that, is not afraid of death and shows wisdom beyond his years. Shawn bids him farewell with tears in his eyes by reading a page from a book he gifted Steve - How to kill a Mockingbird. he reads Evan the page last read by Steve and thanks him saying farewell forever.