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Arthur Geis PhD
The Dr. Julie McCray Science Thriller Series
Plausible science. High-stakes missions. Real-world consequences
The Rocket Scientist
A Dr. Julie McCray Thriller, Book 1
When her Mars rover detects living microbes capable of absorbing carbon dioxide, Dr. Julie McCray believes she's found the key to reversing Earth's climate crisis. But the discovery triggers a covert international scramble for control– and a fight for survival.
The Martian Solution
A Dr. Julie McCray Thriller, Book 2
The discovery on Mars was supposed to save Earth. Now it could destroy it.
As a mutated microorganism threatens millions of lives, Dr. Julie McCray teams with CIA Director CJ Jackson to stop an international conspiracy––before a breakthrough becomes a global catastrophe.
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