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Publisher's Summary

One of the greatest achievements in human history.
A secret that was never supposed to be found.
And a crisis that cannot be stopped.
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.
©2013 Michael C. Grumley (P)2017 Michael C. Grumley
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Customer Reviews

Most Helpful

By shelley on 06-24-17

Grumley could be the new Crichton!!!!!

Any additional comments?

This was so good, I really enjoyed this book. If you're looking for a fun and fast paced sci fi that is reminiscent of Michael Crichton's SPHERE then this is the book for you.
In this book a couple of researchers have developed a computer program that has decoded the sounds of dolphins and can translate them to speech. In steps the Navy wanting to use the dolphins and give them instructions to find lost equipment on the bottom of the ocean. The dolphins find it but they also find something else-some kind of portal. It's either a gateway or a source of energy but it is not of this world or so it seems. There is also a city with 1,200 beings living there. Are they people ? humans? friendly? Or not? Should the Navy shoot first and ask questions later?

Scott Brick is as always a fantastic narrator!

If you found this review helpful please indicate so.
Thank You.

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22 of 26 people found this review helpful

By FocusedOnTheJourney on 07-22-17


I listened to this book and couldn't stop. Every single break at work, every moment in the gym, every ride in the car this book was playing. The writing was phenomenal and the mind blowing plot had me hooked. I CAN'T WAIT to read LEAP and the rest of the series. I do wonder how much of this was science and how much was pure fiction. Either way I was thoroughly entertained and intrigued.

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5 of 6 people found this review helpful

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Customer Reviews

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By Amazon Customer on 09-11-17

Thoroughly enjoyed this book, and now bought Leap

If you could sum up Breakthrough in three words, what would they be?

Good old fashioned adventure story, very much in the ilk of Clive Cussler I thought. There will be those who will not agree, but I listen to a very eclectic selection of books, and sometimes I just want to wallow in some good old mind candy, and this fits the bill. Narration by Scott Brick is as excellent as always. A romping yarn that passed very quickly. Loved it.

Who was your favorite character and why?

I suppose Sally and Dirk -

Which scene did you most enjoy?

I listened in one sitting, so cannot really pick out one part

Was this a book you wanted to listen to all in one sitting?

I did - straight through

Any additional comments?

As I said before, I enjoy a fantasy adventure to just relax and wallow in it. I honestly thought it was a Cussler novel at times.

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1 of 1 people found this review helpful

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Customer Reviews

Most Helpful

By Luke on 10-25-17

An excellent story that is well written.

This story is rather refreshing with unique ideas and plots. There's just the right amount of characters balanced with a good ratio of detail and action/suspense. It does, however, start a bit slow. But once it speeds up, it flows really well. I'm certainly eager to read the next one in the series. Scott Brick, as always, nails the performance.

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