Author guide
A.G. Riddle Books in Order
A.G. Riddle is an American science-fiction and thriller novelist. He spent ten years starting and running internet companies before retiring to write fiction. His debut, The Atlantis Gene, began The Origin Mystery trilogy. His novels have sold millions of copies worldwide, been translated into numerous languages, and several have been optioned for film. He lives in North Carolina.
science fictionthrillermystery
A.G. Riddle's Newest Book
Not sure where to begin?
Start with one of these
The Atlantis Gene
The author's debut and the first book in The Origin Mystery.
Pandemic
The first book in The Extinction Files.
Winter World
The first book in The Long Winter.
Departure
A standalone science-fiction thriller and an accessible entry point.
Read in order
Books by series
series · completed
The Origin Mystery
A science-fiction thriller trilogy exploring human origins, Atlantis, genetics, and the future of humanity.
series · completed
The Extinction Files
A science-fiction thriller duology about a global pandemic and the genetic future of humanity.
series · completed
The Long Winter
A post-apocalyptic science-fiction trilogy about a global ice age and humanity's struggle to survive.
Outside the series
