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A boy is forced to witness the slow and painful collapse of his family in this drama from France. Martin (Julien Cochelin) is an eleven-year-old boy who lives with his family in a rural community. Their large, shabby house has seen better days, but household repair is the least of the family's problems. Martin's mother Nadege (Dominique Reymond) is emotionally unstable and has begun to retreat into a world of her own, and her husband Jean (Jean-Yves Chatelais) has all but given up on trying to communicate with her. Rose (Annie Cordy), Jean's mother, has moved in with the intention of helping out while Nadege recovers, but it's clear she has little regard for her daughter-in-law and avoids interacting with her grandson. Didier (Pascal Cervo), Martin's older brother, helps look after the boy, as does Malika (Fettouma Bouamari), a Middle Eastern immigrant who helps keep house. However, Didier suffers a falling out with his parents when they discover he's fallen in love with a neighbor boy, and Didier is devastated to learn his new boyfriend has announced his upcoming marriage to a girl. Le Dernier des Fous (aka Demented) was adapted from the novel The Last of the Crazy People by Timothy Findley.