Rollback
Under a light rain, Mike Mansfield stands stoically beneath a large tree waiting patiently for the person he has been searching for. Burly and in his mid-fifties, Mansfield was what some might call chaotically good – a person with an unshakable sense of right and wrong, and his own unique brand of justice.
However, what Mansfield doesn’t know is that after years of working in the shadows, someone has now found him. And they have been watching Mansfield for some time.
That person is David Bruni. A man with the means to do something truly groundbreaking with modern technology. He too has been working in secret… to build a supercomputer capable of ‘stitching’ together the billions of pictures taken every day to create snapshots of the world at any given time.
The capability proves to be extraordinary, and one that has coincidentally revealed to Bruni the secret behind Mike Mansfield’s enigmatic success at finding people nobody else can. A well-kept secret that absolutely no one would have expected.
Yet it’s not until a third critical piece appears, a young INTERPOL agent named Leslie Salazar, that Bruni’s true reason for creating his incredible system finally becomes clear.
For years no one had any idea what Bruni was up to… and that was exactly the way he wanted it.
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Michael C. Grumley
For years, Michael Grumley dreamed of writing thrillers the way he thought they should be written; complex, multi-genre stories with unique plots that 'move'. Enter BREAKTHROUGH, AMID THE SHADOWS, and THROUGH THE FOG: all deeply human stories with endings you will never see coming.
Michael C. Grumley lives in Northern California with his two young daughters. He’s an avid reader, runner and most of all father, and dotes on his girls every chance he gets.
He is currently working on the next Breakthrough installment.
Rollback
Rollback consists of three books and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.

