The Bletchley Riddle
Ruta Sepetys
The Riddle-Master of Hed (Riddle-Master, #1)
Patricia A. McKillip
Pandemic (The Extinction Files, #1)
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Winter World (The Long Winter, #1)
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The Riddle (The Books of Pellinor #2)
Alison Croggon
The Atlantis Gene (The Origin Mystery, #1)
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The Mysterious Benedict Society and the Riddle of Ages (The Mysterious Benedict Society, #4)
Trenton Lee Stewart
Riddle-Master (Riddle-Master, #1-3)
Patricia A. McKillip
Difficult Riddles For Smart Kids: 300 Difficult Riddles And Brain Teasers Families Will Love (Thinking Books for Kids Book 1)
M. Prefontaine
The Shaking Palace (Magical Riddles, #1)
Raju Vashishta
The Lost Colony (The Long Winter, #3)
A.G. Riddle
Genome (The Extinction Files, #2)
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The Riddle of the Sands
Erskine Childers
LOL: Funny Jokes and Riddles for Kids (Laugh Out Loud Book 1)
Johnny B. Laughing
The Solar War (The Long Winter, #2)
A.G. Riddle
Heir of Sea and Fire (Riddle-Master, #2)
Patricia A. McKillip
Cows, Pigs, Wars, and Witches: The Riddles of Culture
Marvin Harris
The Riddle of the Labyrinth: The Quest to Crack an Ancient Code
Margalit Fox
Quantum Radio
A.G. Riddle