Twenty-three-year-old Tanner Quimby needs a place to live. Preferably one where she can continue sitting around in sweatpants and playing video games nineteen hours a day. Since she has no credit or money to speak of, her options are limited, so when an opportunity to work as a live-in caregiver for an elderly woman falls into her lap, she takes it. One slip on the rug. That's all it took for Louise Wilt's daughter to demand that Louise have a full-time nanny living with her. Never mind that she can still walk fine, finish her daily crossword puzzle, and pour the two fingers of vodka she drinks every afternoon. Tanner wants nothing to do with the uptight old woman until she starts to notice things-weird things. Like, why does Louise keep her garden shed locked up tighter than a prison? And why is the local news fixated on an international jewelry thief that looks eerily like Louise?