Items with "Kristoph, David" as Credited Author
Crisis at Desolation Station (1 edition)Enigma at the Greensboro Zoo (1 edition)
The House on Hollow Hill (1 edition)
Mystery in the Murky Deep (1 edition)
Rescue from the Valley of Chaos (1 edition)
Sabotage in the Sundered Sky (1 edition)
The Secret of the Aurora Hotel (1 edition)
The Ship at the Edge of Time (1 edition)
The Strange Physics of the Heidelberg Laboratory (1 edition)
The Tower of Never There (1 edition)
Treasures of the Forgotten City (1 edition)