Lost Brother (The Lost Mystery Trilogy #2 / Hardy Boys: Undercover Brothers #35)

The Mystery of Cabin Island (Hardy Boys #8)

The Tower Treasure (Hardy Boys #1)

The Clue of the Broken Blade (Hardy Boys #21)

The Opposite Numbers (Hardy Boys Graphic Novels: Undercover Brothers, No. 7)

Gold Medal Murder (Hardy Boys & Nancy Drew Super Mystery #4)

The Melted Coins (Hardy Boys #23)

The Mystery at Devil's Paw (Hardy Boys #38)

The Shattered Helmet (Hardy Boys #52)

The Great Airport Mystery (Hardy Boys #9)

Danger Overseas (Nancy Drew: Girl Detective and Hardy Boys: Undercover Brothers Super Mystery #2)

Bayport Buccaneers (Hardy Boys: Undercover Brothers #16)

The Vanishing Thieves (Hardy Boys #66)

The Mystery of the Spiral Bridge (Hardy Boys #45)

The Pentagon Spy (Hardy Boys #61)

Hardy Boys #13: The Deadliest Stunt (Hardy Boys: Undercover Brothers (Papercutz Hardcover))

The Hardy Boys Undercover Brothers: The Ultimate Sleuth 24-Book Collection (The Hardy Boys Undercover Brothers, 1-24)

The Ocean of Osyria/Identity Theft/Madhouse/Malled (Hardy Boys Graphic Novels: Undercover Brothers 1-4)

Hardy Boys #13: The Deadliest Stunt (Hardy Boys: Undercover Brothers (Papercutz Hardcover))

To Die or Not to Die (Hardy Boys Graphic Novels: Undercover Brothers #9) (v. 9)

The Opposite Numbers (Hardy Boys Graphic Novels: Undercover Brothers, No. 7)

Spy Set (Boxed Set): Extreme Danger; Running on Fumes; Boardwalk Bust; Thrill Ride (Hardy Boys, Undercover Brothers)

Hyde & Shriek (Hardy Boys Graphic Novels: Undercover Brothers #6) (v. 6)

Terror on Tour (Nancy Drew: Girl Detective and Hardy Boys: Undercover Brothers Super Mystery #1)

Board to Death (Hardy Boys Graphic Novels: Undercover Brothers #8)

Kidnapped at the Casino (Hardy Boys: Undercover Brothers Super Mystery #2)

Wanted (Hardy Boys: Undercover Brothers Super Mystery #1)

Murder House: Book Three in the Murder House Trilogy (Hardy Boys, Undercover Brothers)

Movie Mission: Book Two in the Deathstalker Trilogy (Hardy Boys, Undercover Brothers)

Malled (Hardy Boys Graphic Novels: Undercover Brothers #4)

Double Trouble: Book One in the Double Danger Trilogy (Hardy Boys, Undercover Brothers)

Pushed (Hardy Boys: Undercover Brothers, No. 18)