When Lee first came to Amsterdam, it was with a newborn baby and a secret. Five years later, her life is approaching normal: her career as a celebrity photographer is flourishing, her son Jasper is growing up, and they are enjoying the run-up to Christmas with their tight circle of close friends.

But all this changes one morning when Lee finds a book in the basket of her bicycle - and scrawled inside it, a desperate message. Who left it for her, and why? Lee feels compelled to help and tracks down the book's author, Sam. With an instant, undeniable connection it seems they might have a shot at a real future together.

Until her past comes calling. As the snow falls and ice thickens on the city's canals, the secret Lee has never told resurfaces. Suddenly everything she holds dear hangs in the balance. Christmas is a time for being together - but what if the truth means she ends up alone?