13 books in series
Hardy Boys: Undercover Brothers
Hardy Boys: Undercover Brothers is a 13-book series with 13 primary works first released in 2005 with contributions by Franklin W. Dixon.
| #2 |  Running on Fumes Running on Fumes
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| #4 | Thrill Ride Thrill Ride
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| #6 |  Burned
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| #13 |  The Mummy's Curse
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| #14 |  Hazed
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| #15 |  Death and Diamonds
| 4 | 1 read | ||
| #17 |  Murder at the Mall
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| #31 |  Killer Mission Killer Mission
| 3.5 | 2 reads | ||
| #32 |  Private Killer Private Killer
| 4 | 1 read | ||
| #33 | Killer Connections Killer Connections
| 4 | 1 read | ||
| #34 |  The Children of the Lost The Children of the Lost
| 0 | 1 read | ||
| #35 |  Lost Brother Lost Brother
| 0 | 1 read | ||
| #36 |  Forever Lost Forever Lost
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