Modern day Mary Poppins required to take care of needs of busy professional London family
When Ali Sparrow answers Bryony Skinner's advertisement for a nanny, her life changes in a heartbeat.
At first everything is overwhelming, from twins who speak their own language, to a teenager with weight issues and a son almost her own age. And of course Bryony – oozing privilege thanks to a millionaire father, high-flying husband and her own dazzling career – has a beady eye that focuses on Ali's failings.
But as Ali becomes increasingly indispensible, she realises she's the wallpaper no one notices anymore, which means she's witness to things she probably shouldn't see. So when a scandal erupts that suggests something corrupt has been hatched behind the Skinners' flawless front door, who is better placed than Ali to tell all?
But where do her loyalties lie? To the family she ran away from – or the family of strangers who took her in?