While spending the summer in Tenby, Wales, with their grandfather, American cousins Zoé and Ian assemble an old glass puzzle, inadvertently unleashing ancient forces that threaten the island and allowing them to travel into the past.
- ISBN10 0385742975
- ISBN13 9780385742979
- Publish Date 9 July 2013
- Publish Status Out of Stock
- Publish Country US
- Imprint Delacorte Press
- Format Hardcover
- Pages 319
- Language English