The world's most popular boy detectives have scored a huge success with their latest case. Frank and Joe's friend Biker is being investigated by Mr. Hardy, and the boys want to prove his innocence--against their father's wishes.
- ISBN10 0671646907
- ISBN13 9780671646905
- Publish Date 1 May 1989
- Publish Status Out of Print
- Out of Print 25 March 2015
- Publish Country US
- Imprint Simon & Schuster
- Format Paperback
- Pages 10
- Language English