While the Clock Ticked
Franklin W Dixon
What Happened at Midnight
The Wailing Siren Mystery
The Twisted Claw
Three Ring Terror
Terror at High Tide
The Sinister Signpost
The Short-Wave Mystery
The Shore Road Mystery
The Secret Warning
The Secret of the Old Mill
The Secret of the Caves
The Prime-Time Crime
Passport to Danger
The Mystery Of The Spiral Bridge
The Mystery of the Black Rhino
The Mystery Of The Aztec Warrior
The Missing Chums
The Mark on the Door
The Lure of the Italian Treasure
Lost in Gator Swamp
Kickoff to Danger
The Infinity Clue
In Plane Sight
Hunting for Hidden Gold
The House on the Cliff
High-Speed Showdown
The Hidden Harbor Mystery
The Haunted Fort
The Great Airport Mystery
The Giant Rat of Sumatra
The Ghost At Skeleton Rock
Footprints Under the Window
The Flickering Torch Mystery
A Figure in Hiding
Extreme Danger
The End of the Trail
The Disappearing Floor
Daredevils
Danger in the Extreme
The Crisscross Shadow
Crime in the Cards
The Bicycle Thief
The Alaskan Adventure