When Sarah Larsen answers the Bird family’s advertisement, her life changes overnight. The job seems like a dream come true: nannying in a glamorous penthouse apartment with a salary that adds several zeroes to her income. Sarah signs the contract binding her to complete secrecy without a second thought. These are important people, after all – they can't be too careful about who they let into their home. All is well until events in Sarah’s life begin to take a sinister turn and the trail leads back to the Birds. She soon realises there's something very strange about the family. But by then, is it too late for her? A completely gripping psychological thriller from the author of the number one bestseller The Stepdaughter. Perfect for fans of The Nanny, The Couple Next Door and The Family Upstairs.