The Tower Treasure
$3.59 - $20.84
The Secret of the Caves (Hardy Boys, #7)
$4.29 - $26.79
The Secret of the Old Mill
$3.89 - $22.34
The House on the Cliff
$3.79 - $41.79
The Mystery of Cabin Island (Hardy Boys, #8)
$3.59 - $58.49
What Happened at Midnight
$5.09 - $30.19
The Great Airport Mystery (Hardy Boys, #9)
$3.59 - $9.98
Hunting for Hidden Gold (Hardy Boys, #5)
$3.69 - $15.70
The Shore Road Mystery
$4.69 - $32.09
The Missing Chums (Hardy Boys, #4)
$4.39 - $22.75
While the Clock Ticked
$3.79 - $51.59
Footprints Under the Window
$3.69 - $26.09
The Secret Warning
$4.09 - $16.13
The Disappearing Floor
$4.49 - $74.29
The Hidden Harbor Mystery (The Hardy Boys, #14)
$4.29 - $30.59
The Mark on the Door
$3.99 - $10.80
The Crisscross Shadow (Hardy Boys, #32)
$4.49 - $9.80
A Figure in Hiding (Hardy Boys, #16)
$3.99 - $13.29
The Sinister Signpost (Hardy Boys, #15)
$3.59 - $10.80
The Secret of Wildcat Swamp
$4.39 - $15.19
Arctic Patrol Mystery
$4.49 - $14.79
The Mystery of the Chinese Junk
$4.89 - $9.17
The Haunted Fort (Hardy Boys, #44)
$3.99 - $25.99
The Mystery of the Spiral Bridge
$4.89 - $16.19
The Hooded Hawk Mystery (Hardy Boys, #34)
$3.99 - $10.59
The Twisted Claw
$3.59 - $30.29
The Yellow Feather Mystery
$4.69 - $19.59
The Clue in the Embers
$4.29 - $10.72
The Ghost at Skeleton Rock
$4.09 - $39.19
The Secret of Pirates' Hill (Hardy Boys, #36)
$4.19 - $9.80