Twenty-five years after losing her friend Tessa in a tragic accident, Emma’s life is happy and settled. She rarely thinks about the day that Tessa fell to her death, or the secret that she made Emma swear to keep just hours before. But when her marriage implodes, Emma and her daughter find themselves unexpectedly moving into the headmaster’s former cottage on the grounds of her old school – Denham House. And it’s here she finds the photograph: an explicit image of Tessa, looking directly at the camera. Between catching up with old friends Marlee and Clementine, who are home for a reunion, and the demands of single parenthood, Emma has plenty to distract her… but she can’t shake the image of the photograph. Or the thought that it’s proof of something she had long suspected: Dr Brownley, now headmaster, was involved with Tessa. Was it a mistake to keep quiet about what she knew? Marlee and Clementine have their own complex feelings about returning to their hometown. And when Emma starts to question what really happened to Tessa, each woman must deal with the consequences of decisions they made all those years ago. Because the more Emma digs into the past, the more she discovers that everyone remembers it differently, and that the innocent schoolgirls she thought she knew are hiding some very big secrets.