Hardy Boys: Undercover Brothers Series

Hardy Boys: Undercover Brothers #1

Extreme Danger

Hardy Boys: Undercover Brothers #2

Running on Fumes

Hardy Boys: Undercover Brothers #3

Boardwalk Bust

Hardy Boys: Undercover Brothers #4

Thrill Ride

Hardy Boys: Undercover Brothers #5

Rocky Road

Hardy Boys: Undercover Brothers #6

Burned

Hardy Boys: Undercover Brothers #7

Operation

Hardy Boys: Undercover Brothers #8

Top Ten Ways to Die

Hardy Boys: Undercover Brothers #9

Martial Law

Hardy Boys: Undercover Brothers #10

Blown Away

Hardy Boys: Undercover Brothers #11

Hurricane Joe

Hardy Boys: Undercover Brothers #12

Trouble in Paradise

Hardy Boys: Undercover Brothers #13

The Mummy's Curse

Hardy Boys: Undercover Brothers #14

Hazed

Hardy Boys: Undercover Brothers #15

Death and Diamonds

Hardy Boys: Undercover Brothers #16

Bayport Buccaneers

Hardy Boys: Undercover Brothers #17

Murder at the Mall

Hardy Boys: Undercover Brothers #18

Pushed

Hardy Boys: Undercover Brothers #19

Foul Play

Hardy Boys: Undercover Brothers #20

Feeding Frenzy

Hardy Boys: Undercover Brothers #21

Comic Con Artist

Hardy Boys: Undercover Brothers #22

Deprivation House

Hardy Boys: Undercover Brothers #23

House Arrest

Hardy Boys: Undercover Brothers #24

Murder House

Hardy Boys: Undercover Brothers #25

Double Trouble

Hardy Boys: Undercover Brothers #26

Double Down

Hardy Boys: Undercover Brothers #27

Double Deception

Hardy Boys: Undercover Brothers #28

Galaxy X

Hardy Boys: Undercover Brothers #29

X-plosion

Hardy Boys: Undercover Brothers #30

The X-Factor

Hardy Boys: Killer Mystery #1

Killer Mission

Hardy Boys: Killer Mystery #2

Private Killer

Hardy Boys: Killer Mystery #3

Killer Connections

The Lost Mystery Trilogy #1

The Children of the Lost

The Lost Mystery Trilogy #2

Lost Brother

The Lost Mystery Trilogy #3

Forever Lost

Hardy Boys: Undercover Brothers #37

Movie Menace, Hardy Boys #37

Hardy Boys: Undercover Brothers #38

Movie Mission

Hardy Boys: Undercover Brothers #39

Movie Mayhem