Eight-year-old Maggie Murphy and her younger brother use their grandfather's invention to turn into teenagers for an hour so that they can investigate who is stealing comic books from their father's store.
- ISBN10 0448444380
- ISBN13 9780448444383
- Publish Date 1 November 2007
- Publish Status Cancelled
- Publish Country US
- Imprint Grosset & Dunlap
- Format Paperback (US Trade)
- Pages 48
- Language English