"Hamster Holmes solves mysteries with his sidekick, a firefly named Dr. Watt! Corny O'Squirrel is having trouble sleeping because someone keeps knocking on his door late at night. Can they find out who is knocking, and why?"--
- ISBN13 9781481420365
- Publish Date 12 May 2015
- Publish Status Active
- Publish Country US
- Publisher Simon & Schuster
- Imprint Simon Spotlight
- Format Paperback (US Trade)
- Pages 32
- Language English