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Hardy Boys: Undercover Brothers

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The Hardy Boys: Undercover Brothers book series by multiple authors includes books Extreme Danger, Running on Fumes (Hardy Boys: Undercover Brothers, #2), Boardwalk Bust, and several more. See the complete Hardy Boys: Undercover Brothers series book list in order, box sets or omnibus editions, and companion titles.
40 Books
#1
Extreme Danger - Book #1 of the Hardy Boys: Undercover Brothers

Extreme Danger

Franklin W. Dixon
From $4.69
#3
Boardwalk Bust - Book #3 of the Hardy Boys: Undercover Brothers

Boardwalk Bust

Franklin W. Dixon
From $4.79
#6
#11
Hurricane Joe - Book #11 of the Hardy Boys: Undercover Brothers

Hurricane Joe

Franklin W. Dixon
From $3.59
#12
Trouble in Paradise - Book #12 of the Hardy Boys: Undercover Brothers

Trouble in Paradise

Franklin W. Dixon
From $6.19
#14
#18
#19
Foul Play - Book #19 of the Hardy Boys: Undercover Brothers

Foul Play

Franklin W. Dixon
From $4.99
#23
House Arrest (Hardy Boys: Undercover Brothers, #23) - Book #23 of the Hardy Boys: Undercover Brothers

House Arrest (Hardy Boys: Undercover Brothers, #23)

Franklin W. Dixon, George Albert Brown, Alex Brown, Aamna Qureshi, Annabeth Albert, Nancy Jooyoun Kim
From $5.99
#27
Double Deception - Book #27 of the Hardy Boys: Undercover Brothers

Double Deception

Franklin W. Dixon
From $4.39
#28
the-galaxy-x-trilogy - Book #28 of the Hardy Boys: Undercover Brothers

the-galaxy-x-trilogy

Franklin W. Dixon
From $5.89
#30
The X-Factor - Book #30 of the Hardy Boys: Undercover Brothers

The X-Factor

Franklin W. Dixon
From $4.19
#31
#32
#33
Killer Connections - Book #33 of the Hardy Boys: Undercover Brothers

Killer Connections

Franklin W. Dixon
From $4.69
#34
The Children of the Lost - Book #34 of the Hardy Boys: Undercover Brothers

The Children of the Lost

Franklin W. Dixon
From $7.77
#36
Forever Lost - Book #36 of the Hardy Boys: Undercover Brothers

Forever Lost

Franklin W. Dixon, Alex Brown
From $6.29
#37
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