Fifteen-year-old Billi SanGreal has grown up knowing that being a member of the Knights Templar puts her in danger, but if she is to save London from catastrophe she must make sacrifices greater than she imagined.
- ISBN10 1423119991
- ISBN13 9781423119999
- Publish Date 1 September 2009 (first published 7 May 2009)
- Publish Status Out of Stock
- Publish Country US
- Imprint Little, Brown Books for Young Readers
- Format Hardcover
- Pages 336
- Language English