Are you alone on purpose?

Though fourteen-year-old Alison Shandling is a brain, her twin brother, Adam, is autistic. All of her life, Alison's parents have focused on Adam and what he needs, while Alison has always felt she had to be perfect. When the rabbi's son, Harry Roth, begins taunting Alison about her brother, she does her best to stand up for herself. But when Harry is injured in a diving accident, Alison senses that he's hiding something that he wants to share with someone. And she begins to think that she's just the someone he can share it with . . . .