The Secret of the Caves (Hardy Boys, #7)
$4.19 - $37.89
The Tower Treasure
$4.79 - $62.69
The Secret of the Old Mill
$4.99 - $27.99
The House on the Cliff
$4.69 - $30.99
The Mystery of Cabin Island (Hardy Boys, #8)
$4.79 - $28.34
The Great Airport Mystery (Hardy Boys, #9)
$4.69 - $21.29
Hunting for Hidden Gold (Hardy Boys, #5)
$4.89 - $38.56
The Shore Road Mystery
$4.69 - $28.99
The Missing Chums (Hardy Boys, #4)
$4.59 - $30.99
What Happened at Midnight
$5.09 - $76.99
While the Clock Ticked
$4.79 - $16.09
Footprints Under the Window
$4.79 - $25.79
The Hidden Harbor Mystery (The Hardy Boys, #14)
$4.69 - $25.89
The Tower Treasure / The House on the Cliff (Hardy Boys, #1-2)
$4.39 - $13.84
The Mark on the Door
$5.29 - $72.69
The Secret Warning
$5.39 - $14.79
The Secret of Pirates' Hill (Hardy Boys, #36)
$4.79 - $26.49
A Figure in Hiding (Hardy Boys, #16)
$5.29 - $9.95
The Disappearing Floor
$5.39 - $15.89
The Sinister Signpost (Hardy Boys, #15)
$5.09 - $263.99
The Secret of Wildcat Swamp
$4.69 - $10.66
The Mystery of the Chinese Junk
$4.29 - $9.79
The Clue in the Embers
$5.29 - $18.99
The Clue of the Screeching Owl (Hardy Boys, #41)
$5.09 - $9.61
The Hooded Hawk Mystery (Hardy Boys, #34)
$4.09 - $9.61
The Crisscross Shadow (Hardy Boys, #32)
$4.59 - $10.66
The Ghost at Skeleton Rock
$4.79 - $18.39
The Viking Symbol Mystery (Hardy Boys, #42)
$5.29 - $15.19
The Secret Panel (Hardy Boys, #25)
$5.69 - $32.95
The Sting of the Scorpion (Hardy Boys #58)
$4.19 - $9.99
