True Love, the Sphinx, and Other Unsolvable Riddles
by Tyne O'Connell
series
genres Other8
years 2007
The Pony Rider Boys in Texas; Or, The Veiled Riddle of the Plains
by Frank Gee Patchin
series
genres Childrens
years 2006
The Atlantis Plague: A Thriller (The Origin Mystery, Book 2)
by Riddle, A. G.
series
genres Science
years 2013
The Last Starship
by Marcus Riddle
series
genres Other11
years 2016
Spit and Song (Ustlian Tales Book 2)
by Travis M. Riddle
series
genres Other2
years 2019
The Painted Ponies of Partequineus and The Summer of the Kittens
by Peter H. Riddle
series
genres Other11
years 2012
Winter World
by A. G. Riddle
series
genres Science
years 2019
Genome
by A. G. Riddle
series
genres Science
years 2017
Pandemic (The Extinction Files Book 1)
by A. G. Riddle
series
genres Science
years 2017
The Atlantis Gene: A Thriller (The Origin Mystery, Book 1)
by A. G. Riddle
series
genres Science
years 2013
Departure
by A. G. Riddle
series
genres Science
years 2015
Genome (The Extinction Files Book 2)
by A. G. Riddle
series
genres Science
years 2017
The Atlantis World (The Origin Mystery, Book 3)
by A. G. Riddle
series
genres Science
years 2014
The Solar War (The Long Winter Book 2)
by A. G. Riddle
series
genres Science
years 2019
The Atlantis Plague: A Thriller (The Origin Mystery, Book 2)
by A. G. Riddle
series
genres Science
years 2013
The Extinction Files Box Set
by A. G. Riddle
series The Extinction Files
genres Science
years 2019
The Atlantis Trilogy Box Set- The Complete Series
by A. G. Riddle
series The Atlantis Trilogy
genres Science
years 2019
The Atlantis Gene: A Thriller
by A. G. Riddle
series
genres Science
years 2013
The Changer's Key
by Kent Davis
series Riddle in Ruby
genres Other4
years 2016
A Little Bit Vampy
by A. A. Albright
series Riddler's Edge
genres Mystery
years 2019