26 Hardys #merlinsarrow
The arctic patrol
Mystery of the Whale tattoo
The Disappearing floor
While the clock ticked
The Twisted Claw
The secret of the caves
The Flickering Torch
The Sign of the Crooked Arrow
What happened at midnight
Footprints under the window
Hunting for hidden gold
The Mark on the door
The yellow feather mystery
The secret agent on Flight 101
The Tower Treasure
The Missing Chums
The Viking Symbol
The mystery of the Chinese Junk
The mystery at Devil's Paw
The ghost at skeleton rock
The Clue of the Broken blade
The Phantom Freighter
The secret of Skull mountain
Danger on Vampire trail
The Clue of the Screeching Owl
The shore road mystery