The stunning new novel from the Sunday Times bestselling author. Lydia, Robyn and Dean don't know each other - yet. They live very different lives but each of them, independently, has always felt that something is missing. What they don't know is that a letter is about to arrive that will turn their lives upside down. It is a letter containing a secret - one that will bind them together, and show them what love and familyand friendship really mean...