Peekaboo (2006)

Raymond is an isolated peasant, so detached from society that the villagers have long considered him dead. Though unseen, his presence is felt, and the community secretly blames themselves for failing to help him after his family's death decades ago, believing his family home is haunted by his ghost. When Frédéric, Caroline, and their children move from the city to the countryside, they are unaware of these local legends and find an unexpected opportunity in Raymond's family house.