When Pixie Tate is summoned to the wild Cornish coast to unravel a curious mystery at the stately St Sidwell Manor, she knows that something quite extraordinary must be hiding in its shadows. Over one hundred years ago, in the dark of night, a child vanished from his bed never to be seen again - and Pixie must now discover the truth of those final moonlit hours. As she loses herself in the past, secrets are revealed, love affairs exposed and, ultimately, Pixie will be forced to make a devastating choice that will change her life forever...

The moment Pixie Tate steps inside the opulent Aldershoff Hotel in Manhattan, one of the last relics of New York's Gilded Age, she senses instantly that its elegant walls hide a dark secret. Pixie knows that she must use her unique gift to travel back in time in order to discover the mysteries of the past, and as she slips back over a hundred years, she's shocked to find herself in the midst of one of the most famous events in history. As the stars twinkle overhead, Pixie realises that time is running out. But when she comes face-to-face with a man she thought she'd lost forever, will she keep her promise to save only the souls she should - or is it too late, and has she already changed the future?