When Harriet Vaughn’s body is found in the woods behind her house–with no possessions except a mysterious gold necklace–the quiet town of Ashford Vale is shaken. Her two best friends take the news the hardest; Harvey Lakeland is miserable and horrified. But Florence McAllister is heartbroken and angry. Desperate to know what happened to her friend that night, she puts herself in Harriet’s shoes, trying to understand what led her to end up in those woods. With nothing to go off except CCTV footage of Harriet on the high street, Florence refuses to stop scheming, and her empty theories start to gain purchase. She predicts when the case takes unexpected turns. She sees through some of the suspects’ lies. Gradually, the puzzle of that fateful night starts to piece together, and Florence comes painstakingly closer to uncovering the truth. Until evidence leads to an outcome nobody foresaw. One which Florence will stop at no end to undo.