The Origin Mystery Reading Order
| Title | Published | Buy on Amazon |
|---|---|---|
| The Atlantis Gene | 2013 | Buy |
| The Atlantis Plague | 2013 | Buy |
| The Atlantis World | 2014 | Buy |
The Extinction Files Reading Order
| Title | Published | Buy on Amazon |
|---|---|---|
| Pandemic | 2017 | Buy |
| Genome | 2017 | Buy |
The Long Winter Reading Order
| Title | Published | Buy on Amazon |
|---|---|---|
| Winter World | 2019 | Buy |
| The Solar War | 2019 | Buy |
| The Lost Colony | 2019 | Buy |
Standalone Novels
| Title | Published | Buy on Amazon |
|---|---|---|
| Departure | 2014 | Buy |
| The Extinction Trials | 2021 | Buy |
| Lost in Time | 2022 | Buy |
| Quantum Radio | 2023 | Buy |
A.G. Riddle is an American author known for science fiction thrillers that blend real science with speculative scenarios. His work explores what might happen to humanity when technology, history, and catastrophe converge.
Riddle’s writing draws on extensive research across archaeology, biology, and physics. He takes what-if questions about scientific discoveries and historical mysteries and builds thrillers around them. The Origin Mystery trilogy took the myth of Atlantis and reimagined it through a contemporary science fiction lens, asking what advanced civilization might have preceded humanity and what traces remain.
His other series take similarly ambitious approaches—exploring pandemics, climate change, and existential threats. The Extinction Files examines what could cause global collapse, while the Long Winter imagines humanity surviving a planet suddenly frozen by leaving the sun’s orbit. These stories emphasize adaptation, ingenuity, and the human drive to survive against overwhelming odds.
Beyond novels, Riddle engages with readers through research notes and background materials that expand on the science behind his fictional scenarios. His work appeals to readers who enjoy thought-provoking what-if stories that feel anchored in real possibility.