When Bea and her family are transported aboard an underwater bus to a strange land, her younger brother Theo is lost during the voyage, and somehow it falls to Bea to find out what has become of him.
- ISBN10 0061991961
- ISBN13 9780061991967
- Publish Date 2 February 2010
- Publish Status Active
- Publish Country US
- Publisher HarperCollins Publishers
- Imprint Collins
- Format eBook
- Pages 272
- Language English