When she stumbles across the advert, she's looking for something else completely. But it seems like too good an opportunity to miss: a live-in nanny position, with a staggeringly generous salary. And when Rowan arrives at Heatherbrae House, she is smitten by the luxurious "smart" home fitted out with all modern conveniences, by the beautiful Scottish Highlands, and by this picture-perfect family. What she doesn't know is that she's stepping into a nightmare – one that will end with a child dead and her in a cell awaiting trial for murder. She knows she's made mistakes. But, she maintains, she's not guilty – at least not of murder. Which means someone else is.