On April Fools' Day, Gilbert is unhappy that everyone is tricking him and he is unable to get them back, but then he thinks of a great way to fool his best friend. Includes tricks hidden in the illustrations for the reader to find.
- ISBN10 0061430420
- ISBN13 9780061430428
- Publish Date 17 February 2009
- Publish Status Active
- Publish Country US
- Publisher HarperCollins Publishers Inc
- Imprint HarperCollins
- Format Hardcover
- Pages 32
- Language English
- URL http://harpercollins.com.au/9780061430428