this be a gem . a a film four production the anticipated quality be indeed deliver . shot with great style that remind me some errol morris film and well arrange and simply grip . it long yet horrify to the point it excruciate . we know something bad happen ( one can guess by the lack of participation of a person in the interview ) but we be compel to see it and a bit like a car accident in slow motion . the story span most conceivable aspect and unlike some documentary do not try and refrain from show the grimmer side of the story and a also deal with the guilt of the people don leave behind him and wonder why they do not stop him in time . it take me a few hour to get out of the melancholy that grip me after see this very well make documentary .