his belongings. They have a short scuffle where Bill cuts his hand, and the boy calls him a "psycho". He returns to the motel with their laptop, and finds a video from Sam. He and Kate view it together; Sam only says "mom and dad , I'm sorry, please don't hate me". Bill and Kate get into an argument about what could have caused Sam to kill all those innocent people. Bill lashes out at Kate for always critiquing every decision that Sam ever made, but she says that he was never there for them because he was always so busy working. Bill ends up yelling that he wishes that Sam was never born, and Kate leaves. Kate goes back to their house for the first time since the shooting, and looks through Sam's room. Bill meets with his boss Harry, who reluctantly agrees that he can return to work next week. While grocery shopping, Kate runs into her young co-worker Cooper. They go back to the house, after sharing a sad memory he excuses himself for the bathroom. Kate then discovers Cooper is actually researching Sam when she finds Cooper's notebook. She catches him in Sam's room looking through Sam's stories. He explains that he is writing a piece about the shooting, but that he wanted to portray Sam in a more human light by learning more about him. Saddened, Kate asks him to leave. Bill finally returns to work, but feels alienated by the rest of the staff who keep staring at him. After Bill furiously demands what their problem is, Harry tells Bill to take more time off to see a therapist, so he quits. Bill later visits the cemetery to find Sam's gravestone vandalized, with the word killer written on it. He breaks down both physically and emotionally as he tries to scrub the word off with his bandaged hand. Kate reads all of Sam's stories, and goes to Sam's gravestone as well. She gets a call from the motel manager about Bill, and finds him curled up and depressed in their old room. Kate embraces the emotionally distraught Bill, and takes him home. Sam's voice is heard again as he ends his short story about the boy and girl. He says that no matter what they do, their lives will never be the same. Cast Michael Sheen as Bill Carroll Maria Bello as Kate Carroll