To His New Wife: A twisty and utterly unputdownable psychological thriller

His ex sent me a letter. I thought she was dead.

When Emma married Benjamin, her life came as close to perfect as someone like her ever could have dreamed. No longer just working for his father, she was part of the family. Helping Benjamin move on from the tragic loss of his first wife hasn't always been easy - tears, anniversaries, photos of her everywhere - but it brought them closer together, even if his daughter still spends all her time shut up in her room.

But then the first letter arri...