When Charlene's prize-winning paper disappears on Parents' Night, Invisible Inc. comes to the rescue in this illustrated classroom mystery. Full color.
- ISBN10 0590603248
- ISBN13 9780590603249
- Publish Date 1 April 1998
- Publish Status Active
- Out of Print 8 December 2011
- Publish Country US
- Imprint Scholastic US
- Format Paperback
- Language English