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Michael C. Grumley

Goodreads Author

Born

The United States

Website

http://www.michaelgrumley.com

Genre

Thriller, Suspense, Fiction

Member Since

April 2013

URL

https://www.goodreads.com/michaelgrumley

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Michael C. Grumley is the author of the best-selling BREAKTHROUGH series with over two million books sold. He lives in Northern California with his two young daughters. He’s an avid reader, runner and most of all father, and dotes on his girls every chance he gets. He loves hearing from readers while he works on the next ROLLBACK book.

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Combine Editions
Michael C. Grumley’s books

Average rating: 4.21 · 138,960 ratings · 7,820 reviews · 18 distinct works • Similar authors

	Breakthrough (Breakthrough, #1) 3.99 avg rating — 32,537 ratings — published 2013 — 15 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
	The Last Monument (Monument #1) 4.11 avg rating — 18,848 ratings — published 2020 — 7 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
	Leap (Breakthrough, #2) 4.28 avg rating — 16,212 ratings — published 2014 — 12 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
	Ripple (Breakthrough, #4) 4.51 avg rating — 12,767 ratings — published 2016 — 10 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
	Catalyst (Breakthrough, #3) 4.39 avg rating — 11,782 ratings — published 2015 — 10 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
	Mosaic (Breakthrough, #5) 4.58 avg rating — 8,102 ratings — published 2019 — 8 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
	Through the Fog (Evan, #1) 3.95 avg rating — 7,376 ratings — published 2014 — 10 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
	The Desert of Glass (Monument #2) 4.20 avg rating — 6,640 ratings — published 2021 — 8 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
	Echo (Breakthrough #6) 4.49 avg rating — 5,719 ratings — published 2012 — 8 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
	Amid the Shadows really liked it 4.00 avg rating — 6,190 ratings — published 2013 — 10 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

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Michael C. Grumley's Blog

New Book Giveaway

Just a little over four months until the new book comes out. Sign up for the Goodreads giveaway and a chance to win a free copy!

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Published on September 07, 2023 08:18

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Series by Michael C. Grumley

Breakthrough (6 books)
by

Michael C. Grumley (Goodreads Author)

4.26 avg rating — 89,451 ratings

Monument (2 books)
by

Michael C. Grumley (Goodreads Author)

4.14 avg rating — 25,486 ratings

Evan (2 books)
by

Michael C. Grumley (Goodreads Author)

4.08 avg rating — 10,689 ratings

Revival (2 books)
by

Michael C. Grumley (Goodreads Author)

4.12 avg rating — 5,451 ratings

Rollback (2 books)
by

Michael C. Grumley (Goodreads Author)

4.51 avg rating — 1,649 ratings

More series by Michael C. Grumley…

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Michael’s Recent Updates

Michael Grumley and 1 other person liked Christy E. Armistead's review of Rollback: "Talk about resonating in today's world... This reads as smooth as his Breakthrough series, which you need to read if this is your first experience reading Michael Grumley, and just as mind-bending. He's so good at writing things calmly, while still ta" Read more of this review »
Aug 10, 2025 05:04PM · see review · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Rollback by Michael C. Grumley. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Rollback by Michael C. Grumley <iframe sandbox id="wrongBookKindlePreviewScreen">
Michael Grumley liked Deborah Whitten's review of Rollback: "HIGHLY RECOMMEND- Great Read! This book was fast-paced from the jump. It kept me engaged throughout the entire read. The characters were 3 dimensional, meaning they felt really like i wanted to invite over for dinner or just to hang out. Never saw the" Read more of this review »
Aug 09, 2025 09:02PM · see review · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Rollback by Michael C. Grumley. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Rollback by Michael C. Grumley <iframe sandbox id="wrongBookKindlePreviewScreen">
Michael Grumley rated a book it was amazing Rollback by Michael C. Grumley (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
Jul 30, 2025 10:27AM · 2 likes · like · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Rollback by Michael C. Grumley. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Rollback by Michael C. Grumley <iframe sandbox id="wrongBookKindlePreviewScreen">
Michael Grumley answered Jean Hontz's question: Hi Michael. Just wanted to reach out and say how much I enjoyed Breakthrough. I look forward to the follow on books. Is the series finished? Thank you, Jean. There may be another installment before too long. ;)
Jul 28, 2025 08:54PM · 1 like · like
Michael Grumley liked Greg Butler's review of Rollback: "New Concept Love the concept, the characters, the possibility for new adventures. Really great job. Looking forward to the next Mansfield retribution, intriguing tech, and story. "
Jul 28, 2025 10:55AM · see review · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Rollback by Michael C. Grumley. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Rollback by Michael C. Grumley <iframe sandbox id="wrongBookKindlePreviewScreen">

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Quotes by Michael C. Grumley (?)

“This is about the world being a much more frightening place to live in tomorrow if we don’t do something today. And every generation after us will have to pay the price. The price of not stopping this while we could.”
― Michael C. Grumley, Catalyst

6 likes

“corporations have become the puppet masters behind the government.”
― Michael C. Grumley, Breakthrough

6 likes

“our hopes of communicating with aliens are pretty remote if we haven’t even learned to communicate with another species on the same planet.”
― Michael C. Grumley, Breakthrough

6 likes

See all Michael C. Grumley's quotes »

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