26 books in series
Hardy Boys: Undercover Brothers
Hardy Boys: Undercover Brothers is a 26-book series with 26 released primary works first released in 2005 with contributions by Franklin W. Dixon.
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#6 of 25 in Hardy Boys: Undercover Brothers
2005 • 2 Readers • 166 pages • 5
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#15
#15 of 25 in Hardy Boys: Undercover Brothers
2007 • 1 Reader • 182 pages • 4
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#25
#25 of 25 in Hardy Boys: Undercover Brothers
2008 • 2 Readers • 160 pages • 3
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#33
#33 of 25 in Hardy Boys: Undercover Brothers
2010 • 1 Reader • 4
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#39
#39 of 25 in Hardy Boys: Undercover Brothers
2012