While they are healing , Gluttony loses his composure upon learning that Mustang killed Lust and attacks them .
Edward and his friends escape to Doctor Knox 's house where they learn that Bradley is one of the homunculi .
While they are healing , Gluttony loses Edward 's composure upon learning that Mustang killed Lust and attacks them .
Edward and his friends escape to Doctor Knox 's house where they learn that Bradley is one of the homunculi .