Book editor Katie is in love with poet, Matt Harrison. He seems to share her feelings, but his refusal to talk about his past makes her suspicious. All she knows is that Matt was once married. One evening, he suddenly ends their relationship, leaving Katie devastated. A few days later, he sends her a notebook that he promises will explain everything. Katie opens the book to find it is the diary that Matt's wife, Suzanne, wrote for their baby son. It tells the story of her love for Matt and Nicholas, and reveals the tragedy that haunts Matt's life today. And Katie realises he needs her to understand his past if she is ever to be a part of his future.