649 books • 49 series
The Secret of Wildcat Swamp (Hardy Boys, #31) (The Hardy boys mysteries, #38) (Hardy Boys (eBook), #31)
Hardy Boys 31
Hardy Boys 29
The Secret of the Lost Tunnel (Hardy Boys, #29)
Hardy Boys 28
Hardy Boys 26
Hardy Boys 25
The Disappearing Floor (Hardy Boys, #19)
Stress Point (Hardy Boys Casefiles, #125)
The Twisted Claw (Hardy Boys (eBook), #18) (Hardy Boys, #18)
The Secret Warning (Hardy Boys (eBook), #17) (Hardy Boys, #17)
Figure in Hiding #16 (Hardy Boys (eBook), #16) (Hardy Boys, #16)
Hardy Boys 14
The Hidden Harbor Mystery (Hardy Boys (eBook), #14) (Hardy Boys, #14)
Footprints Under the Window (Hardy Boys, #12) (Hardy Boys (eBook), #12) (Hardy Boys Mystery Stories, #23)
Hardy Boys 12
What Happened at Midnight (Hardy Boys, #10) (Hardy Boys (eBook), #10) (Armada Classics)
Hardy Boys 04
Hardy Boys 08
Hardy Boys 05
Secret of the Old Mill (Hardy Boys, #3)
Tower Treasure (Hardy Boys, #1) (Hardy Boys (eBook), #1) (Hardy Boys Mystery Stories)
Hardy Boys 02
House on the Cliff #2 (Hardy Boys, #2)