Facing the cold, clear glass, Alison Shaw stared nervously into the giant seawater tank.

It was just one year ago that she and her team of marine biologists had stunned the world with their incredible breakthrough.
And now...they were about to do it again.

But an ocean away, something strange was unfolding. Along a lonely coast in South America, an experimental Russian submarine -- long thought to have been dismantled -- has suddenly resurfaced. And the U.S. Navy has taken notice, sending officers John Clay and Steve Caesare to investigate.

The sub has been studying a group of unmarked soldiers. Disappearing into the jungle each night beneath the cover of darkness.
Something has been discovered. Something big.

Unfortunately, the soldiers are about to learn that making the find of the century is one thing. Keeping it...is another.

Edition Language:English
Format Type:

About Michael C. Grumley

Michael C. Grumley lives in Northern California with his wife and two young daughters. He’s an avid reader, runner and most of all father. He dotes on his girls every chance he gets.

    Leap Reviews

  • Donna Backshall

    Leap is the second installment in Michael C. Grumley's Breakthrough series, and it is just as action-packed and fun as book one, Breakthrough. There's nothing abstruse or complicated about these novel...

  • Adelle

    I have to tell you - read this book. But read the first one in the series first - "Breakthrough." Now I've read some comments about "move over Michael Crichton and Dean Koontz," but that's not fair. T...

  • Pat

    This is turning into a really fun series. You can't help liking the cast of characters and their animal companions. Its all a bit 'boys own adventure' but its hugely entertaining and a lot of fun. Des...

  • Michael

    One word comes to mind: "Wow!"My only regret in reading this book, is that I didn't re-read "Breakthrough" prior to reading this book. The author has shown, once again, that he has mastered his genre....

  • Leslie

    This is a sequel and while the first book isn't required it introduces all the characters. In this book the baddies are even badder; we have a national security threat as the Chinese military is remov...

  • Nev Murray

    Michael C Grumley does it again.This is the sequel to Breakthrough. To that end I don't want to give too much away in case you haven't read Breakthrough. All I can say is you seriously need to! These ...

  • Angy

    2,5 SterneLeider weit schwächer als der erste Band. War mir viel zu langatmig und konnte mich nur stellenweise wirklich überzeugen. Das letzte Viertel macht aber dennoch neugierig auf den finalen Te...

  • Jessica Kuster

    Awesome!This book was so good, I recommend Breakthrough and Leap, Michael is a very good storyteller! Can't wait to read more of his books!...

  • Martin Pingree

    This was an amazingly fun read from start to finish. I thoroughly enjoyed. Probably should have read the first book before this but this was still great. ...

  • Laura von Eden

    Da ich bereits vom 1. Teil “Breakthrough” so begeistert war, stand es natürlich außer Frage, dass ich auch die Fortsetzung lesen werde. Ich habe in anderen Meinungen zu dem Buch mehrfach gehört...