The gripping new thriller from the Sunday Times bestselling author of The Ice Cream Girls and All My Lies Are True

Do you have any idea what the people you know are capable of? Bestselling author of All My Lies Are True, Dorothy Koomson, asks how well you can really know your neighbours. Fans of Lisa Jewell and Louise Candlish will rip through the pages of this addictive new thriller.

What if all your neighbours' secrets landed in a diary on your doorstep? What if the woman who gave it to you was murdered by one of the people in the diary? What if the police asked if you knew anything? Would you hand over the book of secrets? Or ... would you try to find out what everyone had done? I Know What You've Done is the unputdownable thriller from the Queen of the Big Reveal.