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THE HARDY BOYS ONLINE: An unofficial online resource for fans of the Hardy Boys books

Undercover Brothers

This series essentially picks up from the Digests, which ended their lengthy run in 2005. The boys are now agents for an organization called A.T.A.C. (American Teens Against Crime). The books are narrated in the first person, with the boys alternating chapters.

1. Extreme Danger (2005)

2. Running on Fumes (2005)

3. Boardwalk Bust (2005)

4. Thrill Ride (2005)

5. Rocky Road (2005)

6. Burned (2005)

7. Operation: Survival (2005)

8. Top Ten Ways to Die (2006)

9. Martial Law (2006)

10. Blown Away (2006)

11. Hurricane Joe (2006)

12. Trouble in Paradise (2006)

13. The Mummy's Curse (2006)

14. Hazed (2007)

15. Death and Diamonds (2007)

16. Bayport Buccaneers (2007)

17. Murder at the Mall (2007)

18. Pushed (2007)

19. Foul Play (2007)

20. Feeding Frenzy (2008)

21. Comic Con Artist (2008)

22. Deprivation House (2008)

Book one in the Murder House trilogy
23. House Arrest (2008)

Book two in the Murder House trilogy
24. Murder House (2008)

Book three in the Murder House trilogy
25. Double Trouble (2008)

Book one in the Double Danger trilogy
26. Double Down (2009)

Book two in the Double Danger trilogy
27. Double Deception (2009)

Book three in the Double Danger trilogy
28. Galaxy X (2009)

Book one in the Galaxy X trilogy
29. X-plosion (2009)

Book two in the Galaxy X trilogy
30. The X-Factor (2009)

Book three in the Galaxy X trilogy
31. Killer Mission (2009)

Book one in the Killer Mystery trilogy
32. Private Killer (2010)

Book two in the Killer Mystery trilogy
33. Killer Connections (2010)

Book three in the Killer Mystery trilogy
34. Children of the Lost (2010)

Book one in the Lost Mystery trilogy
35. Lost Brother (2010)

Book two in the Lost Mystery trilogy
36. Forever Lost (2011)

Book three in the Lost Mystery trilogy
37. Movie Menace (2011)

Book one in the Deathstalker trilogy

Special titles:

S1. Wanted (2006)

Super Mystery #1
S2. Kidnapped at the Casino (2007)

Super Mystery #2
H1. Haunted (2008)

Special ghost stories edition