The Hardy Boys series

The Hardy Boys books in order

1. #1 The Tower Treasure 1927 · Ages 8–14
2. #2 Hardy Boys 03: the Secret of the Old Mill 1927 · Ages 8–13
3. #4 Hardy Boys 04: the Missing Chums 1930 · Ages 8–14
4. #5 Hunting for Hidden Gold 2026 · Ages 8–13
5. #6 The Shore Road Mystery 1997 · Ages 8–14
6. #7 The Secret of the Caves 1964 · Ages 8–13
7. #8 Hardy Boys 08: the Mystery of Cabin Island 1966 · Ages 8–13
8. #9 The Great Airport Mystery 1975 · Ages 8–14
9. #10 Hardy Boys 10: What Happened At Midnight 1931 · Ages 8–14
10. #11 While the Clock Ticked 1962 · Ages 8–13