The House on the Cliff

by Franklin W. Dixon

"So you boys want to help me on another case?"

The Missing Chums

by Franklin W. Dixon

"JOE, how soon will you be ready to roll?"

The Disappearing Floor

by Franklin W. Dixon

"HEY, Frank! Isn't that the black car Dad told us to watch for?" exclaimed Joe Hardy.

The Short-Wave Mystery

by Franklin W. Dixon

DIDAHDIT ... dahdahdididit ... didididahdah ... dahdidahdit ... Frank Hardy's fingers deftly pounded out the CW-key sign...

Night of the Werewolf

by Franklin W. Dixon

The Pentagon Spy

by Franklin W. Dixon, Leslie Morrill

The Outlaw's Silver

by Franklin W. Dixon

The Hooded Hawk Mystery

by Franklin W. Dixon

The Apeman's Secret

by Franklin W. Dixon, Leslie Morrill

The infinity clue

by Franklin W. Dixon

The Ghost at Skeleton Rock

by Franklin W. Dixon

"LET'S see if you can get us down in one piece, Frank!" Blond, seventeen-year-old Joe Hardy leaned forward in the airpla...

Game Plan for Disaster

by Franklin W. Dixon

The Vanishing Thieves

by Franklin W. Dixon

Sky Sabotage

by Franklin W. Dixon

The Mummy Case

by Franklin W. Dixon, Leslie H. Morrill

The Four-Headed Dragon

by Franklin W. Dixon

Cave-in

by Franklin W. Dixon

Mystery of Smugglers Cove

by Franklin W. Dixon, Leslie Morrill

Mystery of Samurai Sword

by Franklin W. Dixon

Trapped at Sea

by Franklin W. Dixon