Famed archaeologist Conrad Yeats discovers that the monuments on the National Mall are aligned to the stars and destined to "lock" with the stars on a prearranged date, sending him on a perilous journey into a hidden world beneath the capital.
- ISBN10 1597228214
- ISBN13 9781597228213
- Publish Date 1 September 2008 (first published 15 April 2008)
- Publish Status Out of Print
- Out of Print 4 August 2016
- Publish Country US
- Imprint Wheeler Publishing Inc
- Edition Large type / large print edition
- Format Hardcover
- Pages 473
- Language English