Lines in the Sand is a 3rd season episode of House which first aired on September 26, 2006. House is drawn to the case of an autistic boy, apparently only for the reason that the patient can’t communicate well enough to give House any clues as to his condition. However, it’s House’s social skills that are soon at issue when he insists his blood-stained carpet be returned to his office. Meanwhile, a 17 year-old patient starts finding House irresistible.