When Marvin Monster fails to keep his promise to a friend, his day goes from bad to worse.
- ISBN10 0979237149
- ISBN13 9780979237140
- Publish Date 1 August 2007 (first published 15 June 2004)
- Publish Status Active
- Publish Country US
- Imprint Keene Publishing
- Format Paperback (US Trade)
- Pages 32
- Language English