I See You, Clare Mackintosh

You do the same thing every day.

You know exactly where you're going. You're not alone . .

. When Zoe Walker sees her photo in the classifieds section of a London newspaper, she is determined to find out why it's there. There's no explanation: just a grainy image, a website address and a phone number.

She takes it home to her family, who are convinced it's just someone who looks like Zoe. But the next day the advert shows a photo of a different woman, and another the day after that. Is it a mistake? A coincidence? Or is someone keeping track of every move they make .