A tender, wrenching, and comic novel that follows two twin boys from infancy to the cusp of adulthood. Twin A and Twin B. That's what Michael and Sal's neuroscientist father irreverently calls them. The boys are born moments apart, but baby Sal's brain scan shows a bleed. He has severe cerebral palsy and intellectual disabilities. Told through multiple perspectives-Gabe, the boys' father; Hannah, their mother; and Michael-this debut novel follows the Mitchell family from the boys' infancy to the cusp of adulthood as they all try to interpret what Sal, who speaks only eight words, is thinking and feeling. The twins' upbringing in suburban Ohio is familiar and unfamiliar, ordinary and extraordinary, as this middle-class family navigates the challenges and rewards of nurturing a special-needs human with a killer dimple who is utterly and winningly himself: sweet, stubborn, mischievous, impenetrable, and above all, very funny. Michael feels that he alone understands Sal and devotes himself to giving his brother a voice in the "e;normal"e; world until he grows up and can't "e;hear"e; his twin anymore-his worst fear. Their mother, a teacher who has given up her career for caregiving, and their father, who is determined to succeed in his research, also struggle with the balance of sacrifice and duty and love, especially as Sal's health deteriorates. Before Michael leaves for college, the twins spend a final week together at a summer camp for people with disabilities, and Sal does something that changes their lives forever. Transforming perceptions of disability and interdependence through tender attention to detail, Range of Motion is wrenching, beautiful, and sharply comic.