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Book Rating (23)

Narrator Rating (11)


Unabridged Audiobook

Written By: Michael C. Grumley

Narrated By: Scott Brick

Date: February 2019

Duration: 10 hours 4 minutes


ONE OF THE GREATEST BREAKTHROUGHS 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.


  • Anonymous

    Grumley's Beakthrough was a great mix of sci-fi tech thriller and military political suspense with a geology lesson hidden within. I enjoyed it - and I did find myself laughing out loud a few time at the banter. I would have preferred a little more character development on the main character. There was very good CD on the rest of the primary characters, so I was surprised I didn't feel a stronger connection to Clay. That is really the only improvement I would have made. Looking forward to the next one! Cheers ~

    1 of 1 people found this review helpful.

  • Jennifer M.

    I loved this book! It was captivating from the start and kept hooking me with every twist and turn! Thank you for this amazing story and please keep them coming!! Also, perfect narrator pick! Great job!

  • Cynthia Ottele

    I enjoyed the book and the narrator was very good.

  • Jenn Golden

    Great adventure, little sci-fy. Loved it!


by Michael C. Grumley

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Breakthrough, Michael C. Grumley
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This title is due for release on February 22, 2019.

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This title is due for release on February 22, 2019
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