When Merlin is weighed down by sorrows, Jack and Annie travel back to feudal Japan to learn one of the four secrets of happiness.
- ISBN10 0375937277
- ISBN13 9780375937279
- Publish Date 1 March 2007 (first published 27 February 2007)
- Publish Status Active
- Publish Country IN
- Imprint Random House USA Inc
- Format Hardcover (Library Binding)
- Pages 108
- Language English