Single mother Lee has the daily routine down to a science: shower in six minutes. Cut food into perfect squares. Never leave her on-the-spectrum son Mason in someone else's care. She'll do anything to keep his carefully constructed world from falling apart. But when her best friend Grace convinces her to recharge her batteries, Lee gives in to a weekend trip. Noah, Mason's handsome, bright, charismatic tutor is happy to stay with him. Forty-eight hours later, someone is dead. But not all is as it seems. Noah may be more than who he claims to be. Grace has a secret that will destroy Lee. Lee has secrets of her own. Perhaps it's no mystery someone is gone after all.