With an unforgettable cast of characters and exhilarating twists and turns, this brilliant psychological thriller from the author of Under Your Skin is sure to please fans of Gone Girl.

Everyone keeps telling me I have to move on. And so here I am, walking down the road where he died, trying to remember him the right way.

A year after her husband Zach’s death, Lizzie goes to lay flowers where his fatal accident took place.

As she makes her way along the road, she thinks about their life together. She wonders whether she has changed since Zach died. She wonders if she will ever feel whole again.

At last she reaches the spot. And there, tied to a tree, is a bunch of lilies. The flowers are addressed to her husband. Someone has been there before her.

Lizzie loved Zach. She really did. But she’s starting to realize she didn’t really know him. Or what he was capable of…