
The Secret of the Caves (Hardy Boys, #7)
$4.79 - $32.95

The Tower Treasure
$4.79 - $32.95

The House on the Cliff
$4.99 - $34.99

The Mystery of Cabin Island (Hardy Boys, #8)
$4.39 - $34.99

The Secret of the Old Mill
$5.29 - $31.99

Hunting for Hidden Gold (Hardy Boys, #5)
$5.09 - $38.65

The Great Airport Mystery (Hardy Boys, #9)
$5.99 - $32.95

The Shore Road Mystery
$4.79 - $33.99

The Missing Chums (Hardy Boys, #4)
$4.79 - $34.99

What Happened at Midnight
$4.69 - $39.19

While the Clock Ticked
$5.39 - $18.89

The Tower Treasure / The House on the Cliff (Hardy Boys, #1-2)
$5.09 - $13.93

Footprints Under the Window
$4.39 - $22.99

The Clue of the Screeching Owl (Hardy Boys, #41)
$5.09 - $10.50

The Mark on the Door
$5.69 - $42.49

The Secret of Pirates' Hill (Hardy Boys, #36)
$5.59 - $26.49

The Secret Warning
$4.79 - $10.69

The Disappearing Floor
$4.69 - $14.69

The Sinister Signpost (Hardy Boys, #15)
$4.49 - $99.19

The Secret of Wildcat Swamp
$5.29 - $10.75

The Hidden Harbor Mystery (The Hardy Boys, #14)
$4.59 - $10.50

The Mystery of the Chinese Junk
$4.99 - $10.26

The Crisscross Shadow (Hardy Boys, #32)
$5.69 - $11.39

The Ghost at Skeleton Rock
$4.69 - $37.29

A Figure in Hiding (Hardy Boys, #16)
$5.59 - $28.79

Mystery of the Flying Express (Hardy Boys, #20)
$4.79 - $15.19

Hardy Boys Boxed Set 1-6
$10.59 - $36.62

The Secret Panel (Hardy Boys, #25)
$4.79 - $32.95

Secret Agent on Flight 101
$6.19 - $11.39

The Mystery of the Spiral Bridge
$5.79 - $10.85