I started this one as soon as I finished Catalyst (book three in the series). It was such an excellent read I didn't put it down until I finished it! The only disadvantage here is I now must wait for the sequel! Something I do with bated breath!

Catalyst continues the series at a breakneck pace. When reading this one I put it down for a while due to life circumstances. When I picked it back up again it was like an excellent case of whiplash, if there ever was one! I devoured it and am jumping right into the final book!

Michael C. Grumley continues his sci-fi science-thriller at a breakneck pace! His cast of characters continues to diversify and grow while finding the turn of events started in the previous novel are, of course, not over yet! Again I couldn't put this book down and cannot wait to see where the story takes me next!

Breakthrough by Michael C. Grumley reads like a wonderful combination of a bit of both Tom Clancy and Michael Crichton. This scientific thriller had me reading non-stop, I could not put it down. While I would not call this Hard Sci-Fi, the science isn't too hand wavy. The action keeps you hooked in throughout and the characters are well thought out. This was a highly entertaining read!