Way up in the Swiss mountains, there's an old grand hotel steeped in tradition and faded splendor. Once a year, when the famous New Year's Eve Ball takes place, and guests from all over the world arrive, excitement returns to the vast hallways. Sophie, who works at the hotel as an intern, is busy making sure that everything goes according to plan. But unexpected problems keep arising, and some of the guests are not who they pretend to be. Very soon,...

Sixteen-year-old Gwyneth discovers that she, rather than her well-prepared cousin, carries a time-travel gene, and soon she is journeying with Gideon, who shares the gift, through historical London trying to discover who they can trust.