Joe and Frank suspect there is a link between the counterfeiting case they are investigating, and the case their father can't discuss. Determined to learn the secret, the Hardy Boys get themselves into a scrape.

3) The missing chums

Author

Dixon, Franklin W

Series

Hardy Boys mystery stories volume 4
The Hardy Boys

Formats

Book, eAudiobook

Description

Read Description

When the Hardy Boys set out to solve the mystery of their missing chums, they discover a gang hide-out in a cave on an island along the way.

4) The Shore Road Mystery

Author

Dixon, Franklin W

Series

Hardy Boys mystery stories volume 6
The Hardy Boys

Description

Read Description

The Hardy brothers try to find out who is behind a rash of automobile thefts that are occurring on Shore Road just outside of Bayport.

5) The great airport mystery: Book 9

Author

Dixon, Franklin W

Pub. Date

1998

Description

Read Description

Falsely accused of a robbery at the airport, the Hardy boys turn the tables on the real thieves by nabbing them in the act of committing another robbery.