When thirteen-year-old Gerald finds himself the heir to twenty billion pounds from an aunt he never met, he inherits with it a mystery surrounding his aunt's death and various artifacts in the British Museum.
- ISBN10 0061944912
- ISBN13 9780061944918
- Publish Date 1 May 2011 (first published 3 August 2009)
- Publish Status Active
- Publish Country US
- Imprint HarperCollins Publishers
- Format Paperback (US Trade)
- Pages 384
- Language English