In the House follows sixteen-year-old Claude, an innocent-looking student who sits in the back of class and otherwise goes unnoticed. But his teacher soon learns that behind the boy’s shy exterior lies a sharp and calculating young writer. Enticed by this powerful new literary voice, Germain encourages Claude to commit increasingly questionable acts in his pursuit of inspiring writing material. Soon after, Claude befriends his classmate Rapha and makes himself at home in his house, developing a special interest in Rapha’s mother. Motivated by his own curiosity as well as his teacher’s enthusiasm, Claude continues to push the boundaries of propriety, going so far as to set his sights on Germain’s own wife Jeanne.