While searching out adventure in the streets of London, Barnaby Grimes finds himself on the trail of a mad chemist with a talent for disappearing into thin air.
- ISBN: 9780385751346
- Authors: Riddell, Chris; Stewart, Paul
- Published: 2010 , Random House Children's Books
- Themes: Adventure, Detectives, Supernatural
- Descriptors: England (UK), Europe, Fantasy, Intermediate (ages 9-14), Mystery and Thriller
- No. of pages: 209