118 ratings | 10 reviews | avg rating:4.03

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Gregory Ryman

Goodreads Author

Born

in Canada

Website

https://www.goodreads.com/author/show/47987716....

Twitter

GregoryRyman

Genre

Espionage, Thriller, Spy

Influences

John Sandford
David Baldacci
Michael Connelly
Lee Child
Ian Rankin
Jo Nesbo ...more

Member Since

March 2021

URL

https://www.goodreads.com/gregoryryman

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Gregory Ryman is a Canadian author and retired technology executive whose passion for intelligence history and global politics fuels his tightly plotted spy thrillers. His novels are known for weaving together authentic detail, moral complexity, and high-stakes intrigue rooted in the modern intelligence landscape.

His debut, Louisiana Hydra, introduces Stephanie Borden, a brilliant international consultant who is inadvertently pulled into a dangerous conspiracy. Thrown together with William Stinson—a reserved but gifted CIA technology specialist—Borden is drawn deep into the agency’s orbit. By the novel’s end, she emerges not just as a survivor but as an unofficial CIA asset, her previous life left behind.

In the follow-up, Artificial Hydra, ...more

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Combine Editions
Gregory Ryman’s books

Average rating: 3.95 · 22 ratings · 15 reviews · 2 distinct works • Similar authors

	Louisiana Hydra (The Hydra Series Book 1) 4.19 avg rating — 16 ratings — 3 editions	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Artificial Hydra (The Hydra Series Book 2) 3.33 avg rating — 6 ratings — 3 editions	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars

* Note: these are all the books on Goodreads for this author. To add more, click here.

Gregory is Currently Reading

Gregory Ryman is currently reading

Killing Moon (Harry Hole, #13)

by Jo Nesbø (Goodreads Author)

bookshelves: currently-reading

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Mar 21, 2026 01:12PM

Gregory Ryman is currently reading

In Too Deep (Jack Reacher, #29)

by Lee Child (Goodreads Author)

bookshelves: currently-reading

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Mar 10, 2026 07:21PM

Gregory Ryman is currently reading

Artificial Hydra (The Hydra Series Book 2)

by Gregory Ryman (Goodreads Author)

bookshelves: currently-reading, favorites, crime, my-books, mystery, suspence, thriller, espionage, spy

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May 13, 2025 06:48AM

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Gregory’s Recent Updates

Gregory Ryman is currently reading Killing Moon (Harry Hole, #13) by Jo Nesbø (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Mar 21, 2026 01:12PM · 1 like · like
Gregory Ryman started reading In Too Deep (Jack Reacher, #29) by Lee Child (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Mar 10, 2026 07:21PM · 3 likes · like · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of In Too Deep by Lee Child. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — In Too Deep by Lee Child <iframe sandbox id="wrongBookKindlePreviewScreen">
Gregory Ryman rated a book really liked it Rivers of London (Rivers of London, #1) by Ben Aaronovitch (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Kind of just stumbled on this one, but really glad I did. Just the right amount of world building. Enjoyed the back and forth. The story felt like it ended a little abruptly but I have to think the next book in the story will jump right back in. Hook ...more
Mar 10, 2026 09:06AM · 5 likes · like · see review · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Rivers of London by Ben Aaronovitch. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Rivers of London by Ben Aaronovitch <iframe sandbox id="wrongBookKindlePreviewScreen">
Gregory Ryman rated a book liked it The Proving Ground (The Lincoln Lawyer, #8; Harry Bosch Universe, #40) by Michael Connelly (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Meh. Not bad but not even close to his best work in this line. Kind of felt like he rushed it.
Feb 04, 2026 06:14PM · 2 likes · like · see review
Gregory Ryman is currently reading Rivers of London (Rivers of London, #1) by Ben Aaronovitch (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Feb 04, 2026 06:13PM · 1 like · like · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Rivers of London by Ben Aaronovitch. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Rivers of London by Ben Aaronovitch <iframe sandbox id="wrongBookKindlePreviewScreen">
Gregory Ryman rated a book really liked it Nightshade (Catalina, #1) by Michael Connelly (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
A nice first entry for this debut series. Looking forward to the next one.
Feb 04, 2026 06:12PM · 2 likes · like · see review · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Nightshade by Michael Connelly. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Nightshade by Michael Connelly <iframe sandbox id="wrongBookKindlePreviewScreen">
Gregory Ryman rated a book liked it Agent Zero (Agent Zero, #1) by Jack Mars (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Welp. I tried. I really tried. But this just wasn't doing it for me. I realize this was a debut, so I didn't have unreasonable expectations. But it wasn't just one thing. I kept stumbling across the most peculiar word choices (what exactly is a two-s ...more
Oct 27, 2025 09:39AM · 3 likes · like · see review · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Agent Zero by Jack Mars. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Agent Zero by Jack Mars <iframe sandbox id="wrongBookKindlePreviewScreen">
Gregory Ryman rated a book liked it Bad Actors (Slough House, #8) by Mick Herron	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Sep 08, 2025 12:06PM · 2 likes · like · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Bad Actors by Mick Herron. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Bad Actors by Mick Herron <iframe sandbox id="wrongBookKindlePreviewScreen">
Gregory Ryman made a comment on Tami Wylie’s review of Louisiana Hydra (The Hydra Series Book 1) " Cheer Tami! Glad you enjoyed it! Appreciate you taking the time on an indie. All the best. G "
Sep 03, 2025 06:30AM · see review
Gregory Ryman liked Tami Wylie's review of Louisiana Hydra (The Hydra Series Book 1): "The first book in the Stinton/Borden thriller series, Louisiana Hydra went way beyond my expectations. It was a thrill a minute read, packed with mystery, conspiracy, drama, action intention. There was also plenty of political intrigue centred around" Read more of this review »
Sep 03, 2025 06:29AM · see review · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Louisiana Hydra by Gregory Ryman. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Louisiana Hydra by Gregory Ryman <iframe sandbox id="wrongBookKindlePreviewScreen">