The Short-Wave Mystery
Franklin W. Dixon
Short (1)
The Tower Treasure
The Wailing Siren Mystery
The Secret Agent on Flight 101
The Secret of Pirates' Hill
The Secret of Skull Mountain
Mystery Map
Hunting for Hidden Gold
Infinity Clue
Mystery at Devil's Paw
Mystery of the Flying Express
Mystery of the Desert Giant
The Arctic Patrol Mystery
The Clue of the Broken Blade
The Clue in the Embers
The Clue of the Screeching Owl
The Crisscross Shadow
The Disappearing Floor
The Ghost at Skeleton Rock
The Great Airport Mystery
The Flickering Torch Mystery
The Hooded Hawk Mystery
The House on the Cliff
The Mark on the Door
The Melted Coins
The Missing Chums
The Mystery of the Chinese Junk
The Mystery of Cabin Island
The Phantom Freighter
The Secret of the Caves
The Secret of the Lost Tunnel
The Secret of Wildcat Swamp
The Secret Panel
The Secret Warning
The Shore Road Mystery
The Sign of the Crooked Arrow
The Sinister Signpost
The Viking Symbol Mystery
The Twisted Claw
While the Clock Ticked
The Yellow Feather Mystery
What Happened at Midnight