In the book that launched her adventures, Meg follows a series of notes hidden in her grandfather's house to solve an old mystery of a missing baseball signed by Babe Ruth. The reader is challenged to interpret each clue before Meg solves it.
- ISBN10 1888695005
- ISBN13 9781888695007
- Publish Date 28 April 1996 (first published 1 April 1996)
- Publish Status Active
- Publish Country US
- Imprint Secret Passage Press
- Format Paperback
- Pages 48
- Language English