<P> After the funeral of his grandmother who was killed in Berlin by an enemy bombing, Ralf tells Bruno and Gretel that Elsa, their mother, suggests that they go to live with a relative because it is not safe there . In truth, Elsa suggests this because she does not want her children living with their murderous father . Shmuel has problems of his own; his father has gone missing after those with whom he participated in a march did not return to the camp . Bruno decides to redeem himself by helping Shmuel find his father . The next day, Bruno, who is due to leave that afternoon, dons a striped prisoners' outfit and a cap to cover his unshaven head, and digs under the fence to join Shmuel in the search . Bruno soon discovers the true nature of the camp after seeing the many sick and weak - looking Jews, much to his shock . While searching, the boys are taken on a march with other inmates by Sonderkommandos . </P> <P> At the house, Gretel and Elsa discover Bruno's disappearance . After they discover the open window he went through, Elsa bursts into Ralf's meeting to alert him that Bruno is missing . Ralf and his men mount a search . Led by a dog tracking Bruno's scent they find his discarded clothing outside the fence . Elsa and Gretel are following along behind . They enter the camp, looking for him; Bruno, Shmuel and the other inmates are stopped inside a changing room and are told to remove their clothes for a "shower". They are packed into a gas chamber, where Bruno and Shmuel hold each other's hands . A Schutzstaffel soldier pours some Zyklon B pellets inside, and the prisoners start panicking, yelling and banging on the metal door . When Ralf realises that a gassing is taking place, he cries out his son's name, and Elsa and Gretel fall to their knees in despair and mourn Bruno . The film ends by showing the closed door of the now - silent gas chamber, indicating that all prisoners, including Bruno and Shmuel, are dead . </P> <Ul> <Li> Asa Butterfield as Bruno </Li> <Li> Jack Scanlon as Shmuel, a young Jew sent to a concentration camp </Li> <Li> Vera Farmiga as Elsa, Bruno's mother </Li> <Li> David Thewlis as Ralf, Bruno's father </Li> <Li> Amber Beattie as Gretel, Bruno's older sister </Li> <Li> Rupert Friend as Lieutenant Kurt Kotler </Li> <Li> David Hayman as Pavel </Li> <Li> Sheila Hancock as Natalie, Bruno's grandmother </Li> <Li> Richard Johnson as Matthias, Bruno's grandfather </Li> <Li> Cara Horgan as Maria </Li> <Li> Jim Norton as Herr Liszt </Li> </Ul> <Li> Asa Butterfield as Bruno </Li>

Who dies in boy in the striped pajamas