Heidi Hart just graduated from college, ready to take on the world, or at least New York City. She never thought she'd still be job-hunting three months later, her savings account drained and her rent due. While her friends are busy planning the new nurseries for their firstborns, the perfect additions to their perfect families, Heidi is pounding the pavement. Determined to make it on her own, but running out of funds, she reluctantly agrees to take a nanny position to pay the bills...only the job is to be a companion to a fifteen-year-old girl. It's only after meeting her new charge, Lauren Dayton, that Heidi begins to realize two things: one, that the quiet life the Daytons have constructed is built on a decade of pain and mystery, a mystery that haunts each member of the family differently; and two, that no matter how simple the job seems, you should never believe the job description.