The Hardy Boys Undercover Brothers

The Undercover Brothers series debuted in 2005 and ended in 2012. It was written in a first person perspective, alternating between Frank and Joe each chapter. It featured the all-new ATAC (American Teens Against Crime) organization which was partially founded by their father, Fenton Hardy, but which their mother, Laura Hardy, did not know existed. They own and ride motorcycles in this series rather than a car or van from the previous series.

This series had several spin-off and related series including a couple series of graphic novels, a yearly Nancy Drew Super Mystery crossover series, three one-off specials, and a couple computer games.

1) Extreme Danger
2) Running on Fumes
3) Boardwalk Bust
4) Thrill Ride
5) Rocky Road
6) Burned
7) Operation: Survival
8) Top Ten Ways to Die
9) Martial Law
10) Blown Away
11) Hurricane Joe
12) Trouble in Paradise
13) The Mummy's Curse
14) Hazed
15) Death and Diamonds
16) Bayport Buccaneers
17) Murder at the Mall
18) Pushed
19) Foul Play
20) Feeding Frenzy
21) Comic Con Artist
22) Deprivation House
23) House Arrest
24) Murder House
25) Double Trouble
26) Double Down
27) Double Deception
28) Galaxy X
29) X-plosion
30) The X-Factor
31) Killer Mission
32) Private Killer
33) Killer Connections
34) The Children of the Lost
35) Lost Brother
36) Forever Lost
37) Movie Menace
38) Movie Mission
39) Movie Mayhem