In the city of Elyzandrium, an intrepid cat and his animal friends meet an inventor of magical toys, investigate the case of the stolen laughter, and ultimately become a successful crime fighting gang of ninjas.

• ISBN: 9780385744515
• Author: Tamm, Henrik
• Published: 2015 , Delacorte Books for Young Readers
• Themes: Animals, Cats, Friendship, Magic, ninja
• Descriptors: Europe, Nordic, Primary (ages 6-9), Sweden
• No. of pages: 224