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Breakthrough [Kindle Edition]

Michael C. Grumley
4.5 out of 5 stars  See all reviews (1,850 customer reviews)

Print List Price: $11.78
Kindle Price: $2.99
You Save: $8.79 (75%)
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Book Description

"If you like Action/Adventure, read this book." - Michael Lampard

"Intriguing and suspenseful from the beginning to the very end." - Dr. Bojan Tunguz - AMAZON TOP 50 & HALL OF FAME REVIEWER


Deep in the Caribbean Sea, a nuclear submarine is forced to suddenly abort its mission under mysterious circumstances. Strange facts begin to emerge that lead naval investigator, John Clay, to a small group of marine biologists who are quietly on the verge of making history.

With the help of a powerful computer system, Alison Shaw and her team are preparing to translate the first two-way conversation with the planet's second smartest species.  But the team discovers much more from their dolphins than they ever expected when a secret object is revealed on the ocean floor.  One that was never supposed to be found.

Alison was sure she would never trust the military again. However, when an unknown group immediately becomes interested in her work, Alison realizes John Clay may be the only person she can trust.  Together they must piece together a dangerous puzzle, and the most frightening piece, is the trembling in Antarctica.

To make matters worse, someone from the inside is trying to stop them.  Now time is running out...and our understanding of the world is about to change forever.

Editorial Reviews


"You'll miss a great experience if you don't read this book." - J. Schilling
"This story was impossible to put down. The technology was fascinating and believable, the plot complicated enough to keep me interested and the characters were real. I was there, in the cold of Antarctica, felt the bullets whizzing by in the aquarium, and in general had a great adventure. As a postscript, I finished the book, found that the author had another Amazon book available, Amid the Shadows, and immediately downloaded it. I can't wait to jump back onto Grumley's bus!" - Shelley Morgan
"If you like Clive Cussler you will love this book!" - Gail Ward
"After I finished "Breakthrough" at 11pm in bed I immediately bought his next book; "Amid The Shadows" without even reading the synopsis or the reviews. I just wanted more good story." - K.A. Higgins
"Better than Dean Koontz. Five stars. I expect great things from Mr. Grumley and am looking for his next book. Five Stars!" - Sandra Rocha
 "As a Clancy fan and a former submariner I thought I was buying a techno thriller. The book stands alone. A great read with lots of interesting and thought provoking events. I looked forward to each chapter and the ride it provided. Well done!" - Robert Clark
"Right up there with Michael Crichton. Wow - where did this guy come from? Being retired and having read several hundred Kindle books, I can honestly say this has to be the most exciting heart pounding story I have yet read on my Kindle. I give it 10 stars out of 5 and - as another reviewer said "I guarantee you'll be downloading his next book.... The minute you finish this one." I sure did." - L. Spaiser

From the Author

Books by Michael C. Grumley:

Product Details

  • File Size: 1517 KB
  • Print Length: 324 pages
  • Simultaneous Device Usage: Unlimited
  • Sold by: Amazon Digital Services, Inc.
  • Language: English
  • ASIN: B00BVFM04C
  • Text-to-Speech: Enabled
  • X-Ray:
  • Lending: Enabled
  • Amazon Best Sellers Rank: #1,694 Paid in Kindle Store (See Top 100 Paid in Kindle Store)
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Customer Reviews

Most Helpful Customer Reviews
60 of 68 people found the following review helpful
5.0 out of 5 stars excellent read September 22, 2013
By cdb8128
Format:Kindle Edition|Verified Purchase
I absolutely enjoyed this book and couldn't seem to put it down. I have a degree in marine biology so I reaaly liked the sci fi take on marine biology. This book had some of everything I enjoy in a good book - action, mystery, scifi and conspiracy. I do wish the love story had been explored more and some of my questions better addressed. I would love to see the story continued.
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39 of 44 people found the following review helpful
5.0 out of 5 stars Suspenseful and Fast Paced! March 18, 2013
Format:Kindle Edition|Verified Purchase
This debut novel is well written with more than a few surprises in the storyline. Breakthrough offers a look at a different kind of danger facing the earth. It's not the usual suspects. The suspense accelerates page by page to a build up you never see coming. Don't try to guess the ending, cause you'll be wrong. What begins as a routine naval investigation turns bad real fast and by the time they figure out what's wrong, it's worse than they think. While the main characters scramble to save lives they get a little help from their friends. In the meantime you won't be able to put this book down!
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148 of 183 people found the following review helpful
2.0 out of 5 stars Full of WTF moments and cliches September 19, 2013
By Todd a
Format:Kindle Edition
I really wanted to like this book. Dolphins are incredible creatures and all the data shows they are likely sentient intelligent beings with a complex language and social structure. The book's premise of being able to communicate with them is well constructed and plausible.

The problem with this book (besides a plethora of typos) is the story line is a mess. The characters make unbelievably irrational and often cliche decisions. "Leave me, save yourselves" and "I'm going, but I'm going alone". It just didn't make any sense. Why would anyone even think to do that when a much better solution is staring you right in the face? All the suspense and action in this book is rooted in incredibly contrived situations that are simply not plausible.

Some of the 'science' of the book is so off the wall it doesn't even work in context of the story. It also bothers me that despite how much the scientists care for the dolphins and upon discovering just how intelligent and undeniably sentient they are, the characters are blind to how morally wrong it is to keep the dolphins in captivity as (essentially) slaves.

WTF Moments: SPOILERS and why it only gets 2 stars:
Why was Palin's son even ON the boat? The whole story hinges on him getting caught but there was absolutely no reason presented for him to be there in the first place.

The author spends almost a whole chapter explaining how vastly superior technology the ring is and generates more power than anyone on earth can even comprehend. Then, they want to go pick a fight with the people who created it? Ok, these are grandstanding politicians and military leaders, maybe they would pick a fight. I withdraw my objection.
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23 of 27 people found the following review helpful
5.0 out of 5 stars A great book that kept me reading all night long August 2, 2013
By Alex F.
Format:Kindle Edition|Verified Purchase
So, I did not know what to expect from this book but it was definitely a five star book. Many times I am not one for multiple point of views converging in a book but I thought I would give it a try. I was surprised that the author put thought into the converging story lines. Plus the book had great plot with suspense, mystery, character into Breakthrough that I could not put the book down. Definitely a book I would recommend to others.
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39 of 48 people found the following review helpful
4.0 out of 5 stars Enjoyable Adventure August 29, 2013
By Bea
Format:Kindle Edition|Verified Purchase
This was an interesting read and quite entertaining. It had a lot about dolphins that seemed real enough as well as global warming issues, a bit of intrigue and it made for quite an adventure. There were a few words missing that forced me to have to make up a sentence or two and an occasional double word but overall it didn't detract a lot from the story. I have two issues however that caused me to give it only 4 stars.
Issue 1 - a dolphin is not a FISH - it's a MAMMAL. I can't tell you how many times someone called a dolphin a fish - even in front of a dolphin researcher and she didn't bother to correct it. Frankly I found this quite odd and it didn't fit into the story line (as in someone who needed to learn what a dolphin was)
Issue 2. There are two female characters in the book with a Ph.D but never once, even in their professional capacity did someone call them Dr. - no, the author called them Ms. I doubt very much that someone wouldn't correct that and I know since I'm a professional with a PhD - so... that really irked me - but that's a pet peeve of mine and I didn't dock the author for the oversight
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14 of 16 people found the following review helpful
3.0 out of 5 stars Strong Start, Weak(ish) End (SPOILERS) October 3, 2013
By Jambo
Format:Kindle Edition|Verified Purchase
Every so often you come across a real gem of a self-published book. This was nearly it.

It set the context and characters well, and was engagingly written. The little 'reveals' as the plot proceeds were nicely paced and kept me reading to find out more.

Then, as the cataclysmic climax nears, the writing started to fall apart. I can overlook scientific absurdities in the name of action and suspense (and there were quite a few). But the ending seemed rushed with little explanation as to what actually happened. How did the dolphin survive? What happened to Clay and Palin from leaving the aquarium to arriving at the White House? No further mention of Bimini after being flattened by a nuclear blast. What did the ring do - transport things to another planet or to the other side of the ring?

Three stars for keeping me reading and, overall, enjoying it.
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Most Recent Customer Reviews
5.0 out of 5 stars Wow!
This was the second of Mr. Grumley's books that I read. The first being Amid the Shadows. I was not disappointed. The story caught my interest from the first page. Read more
Published 58 minutes ago by Sugar Plum
5.0 out of 5 stars A fast paced, fun story
This book is fun from start to finish. I almost didn't read it after seeing some of the negative reviews, but I'm glad I did. It was thoroughly enjoyable.
Published 10 hours ago by T. R. Todd
4.0 out of 5 stars Worth a read!
An enjoyable read. Not too complex but entertaining and worth the money.
Published 19 hours ago by Sarah A Porter
5.0 out of 5 stars Great story with great suspense
Great story with great suspense! Scary government with very, very scary military people doing whatever in the heck they are told had me sitting on the edge of my chair many times. Read more
Published 23 hours ago by LR2003
5.0 out of 5 stars Worth the read
I realy enjoyed this book. Makes you think if only it was possible. or is it? Either way well written book kept me reading thru the night. Get it. Read it. Love it.
Published 1 day ago by Shane bowlin
3.0 out of 5 stars excellent read
Again, Michael did a great job with his first book. I gave it 3stars as this is usually the highest I go unless I think But seriously, this was a fantastic read. Read more
Published 1 day ago by Critique god
5.0 out of 5 stars Fantastic, fast paced read.
The action was non-stop from the outset of the story.this book was so good that I didn't want to put it down. I can't wait to read another book by Mr.Grumley. Read more
Published 1 day ago by Ray J. Orgeron
3.0 out of 5 stars Breakthrough
Bought as a gift. Didn't read.
Published 1 day ago by G. Mckinley
5.0 out of 5 stars Page Turner
An exceptional read. It turns the pages by itself. My eyes got heavier then my Kindle. You won't want to put it down.
Published 2 days ago by JEROME KOENIG
5.0 out of 5 stars Five Stars
Thoroughly enjoyed the story, great read!
Published 2 days ago by Amazon Customer
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More About the Author

For years, Michael Grumley dreamed of writing action thrillers the way he thought they should be written; stories with unique plots that 'move'. Enter BREAKTHROUGH and AMID THE SHADOWS, stories with fascinating plots, taking readers on exciting rides with endings impossible to guess.

Michael C. Grumley lives in Northern California with his wife and two young daughters where he works in the Information Technology field. He's an avid reader, runner and most of all father. He dotes on his girls every chance he gets. His website is and his email address is

He is currently working on 'LEAP', the sequel to BREAKTHROUGH, which has an expected release of July 31st.

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Get Breakthrough for free!
Hi Piotr,

Thank you for the download info, but I can't do it. I think new authors need some support and ought to be paid for their work. Most are struggling. It's tempting though :)
May 17, 2014 by Skye Hye |  See all 2 posts
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