Hardy Boys 01: The Tower Treasure Hardy Boys 01: The Tower Treasure
1927
Hardy Boys 52: The Shattered Helmet Hardy Boys 52: The Shattered Helmet
1973
Hardy Boys 02: The House on the Cliff Hardy Boys 02: The House on the Cliff
1927
The Secret of the Old Mill The Secret of the Old Mill
1927
Hardy Boys 09: The Great Airport Mystery Hardy Boys 09: The Great Airport Mystery
1930
Hardy Boys 51: The Masked Monkey Hardy Boys 51: The Masked Monkey
1972
Secret of the Red Arrow Secret of the Red Arrow
2015
Return to Black Bear Mountain Return to Black Bear Mountain
2020
A Con Artist in Paris A Con Artist in Paris
2017
Gray Hunter's Revenge Gray Hunter's Revenge
2018
The Hardy Boys: The Secret of the Old Mill (Unabridged) The Hardy Boys: The Secret of the Old Mill (Unabridged)
2026
Stolen Identity Stolen Identity
2018