Recuperating after a serious accident, not knowing if he'll ever ride again, champion jump jockey and racing columnist Harry Radcliffe accepts a commission to ghost-write the autobiography of retiring racehorse trainer Elspeth Maudsley. But as he begins to research her family history, it becomes increasingly clear to Harry that there are things Elspeth isn't telling him about her past. What's more, a series of threatening incidents, escalating in menace and intensity, begins to convince Harry that someone is determined to stop him writing this book - whatever it takes.

And Harry is about to uncover secrets in his own family's past too. Secrets that will shake him to his core and ensure that he can never feel certain about anything again.