I just finished Ripple, it's the fourth book in the series that begins with "Breakthrough," by Michael C. Grumley. This is one of, if not the best series I have ever read. And I've read a lot of them over the years... Mr. Grumley is a fantastic story teller. More than that, he writes with such intensity, I was unable to put this series (4 books) down until I finished each one. They are all that good. His stories cover so many areas of science that have never been covered before, as far as I know, by any other author. Also, beyond science, the characters are so well developed, they come alive on the page. Their stories, woven within the main story, captivated me on so many levels that I was astounded with his ability to weave such an intricate story lines, yet each one was easy to follow.
Many thanks to Michael C Grunley, for his time, his skill, and his insight into the world of writing a series that transcend the genre while directing me to places I have never gone before...