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Rollback

— A riveting new series from the bestselling author of the Breakthrough series —

Mike Mansfield is a man who finds people. Not the easy ones — the ones no one else can find. The ones the world has given up on. Burly, mid-fifties, and operating somewhere in the gray space between right and wrong, he has built a quiet reputation on results that defy explanation. Nobody knows how he does it. Nobody has ever gotten close enough to ask.

Until now.

David Bruni has spent years building something extraordinary in secret — a supercomputer capable of stitching together the billions of photographs taken every single day, creating a living, breathing snapshot of the world at any moment in time. It is an unprecedented leap in surveillance technology. And almost by accident, it has revealed the truth behind Mansfield’s impossible gift.

A secret nobody would have seen coming.

But Bruni didn’t build his system just to satisfy his curiosity about one enigmatic man. His real purpose runs much deeper — and it isn’t until a sharp young INTERPOL agent named Leslie Salazar enters the picture that the full scope of what Bruni has set in motion finally comes to light.

Three people. Three secrets. And a technology that changes everything.

Rollback — a thriller that moves from the very first page.

ASIN ‏ : ‎ B0F9KJY7NK
Publisher ‏ : ‎ Independently published
Publication date ‏ : ‎ July 15, 2025
Language ‏ : ‎ English
Print length ‏ : ‎ 349 pages
ISBN-13 ‏ : ‎ 979-8283954318
Item Weight ‏ : ‎ 1.03 pounds
Dimensions ‏ : ‎ 6 x 0.88 x 9 inches
Book 1 of 3 ‏ : ‎ Rollback
Best Sellers Rank: #143,525 in Books (See Top 100 in Books) #90 in Military Thrillers (Books) #211 in Conspiracy Thrillers (Books) #228 in Political Thrillers (Books)
Customer Reviews: 4.5 4.5 out of 5 stars (2,253) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

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— A riveting new series from the bestselling author of the Breakthrough series —
Mike Mansfield is a man who finds people. Not the easy ones — the ones no one else can find. The ones the world has given up on. Burly, mid-fifties, and operating somewhere in the gray space between right and wrong, he has built a quiet reputation on results that defy explanation. Nobody knows how he does it. Nobody has ever gotten close enough to ask.
Until now.
David Bruni has spent years building something extraordinary in secret — a supercomputer capable of stitching together the billions of photographs taken every single day, creating a living, breathing snapshot of the world at any moment in time. It is an unprecedented leap in surveillance technology. And almost by accident, it has revealed the truth behind Mansfield’s impossible gift.
A secret nobody would have seen coming.
But Bruni didn’t build his system just to satisfy his curiosity about one enigmatic man. His real purpose runs much deeper — and it isn’t until a sharp young INTERPOL agent named Leslie Salazar enters the picture that the full scope of what Bruni has set in motion finally comes to light.
Three people. Three secrets. And a technology that changes everything.
Rollback — a thriller that moves from the very first page.
ASIN ‏ : ‎ B0F9KJY7NK
Publisher ‏ : ‎ Independently published
Publication date ‏ : ‎ July 15, 2025
Language ‏ : ‎ English
Print length ‏ : ‎ 349 pages
ISBN-13 ‏ : ‎ 979-8283954318
Item Weight ‏ : ‎ 1.03 pounds
Dimensions ‏ : ‎ 6 x 0.88 x 9 inches
Book 1 of 3 ‏ : ‎ Rollback
Best Sellers Rank: #143,525 in Books (See Top 100 in Books) #90 in Military Thrillers (Books) #211 in Conspiracy Thrillers (Books) #228 in Political Thrillers (Books)
Customer Reviews: 4.5 4.5 out of 5 stars (2,253) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

12 reviews for Rollback

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  1. Tom

    Michael with another great book!
    Once again Michael delivers a fast-paced thriller with amazing characters. Not only are his books amazing, but I always learn something when reading Michael’s books. The technology and subject of human trafficking make this story so current and provides much needed focus on crimes that too often get ignored. Amazing story!

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  2. Dorathy Andersonthickett

    another fun ride with Michael’s great story telling
    Michael always gives us a glance at near future science and or technology. Great characters with page turning tension and release.Steve Thickett

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  3. PJ

    Fantastic Book!!!
    I do not know what Michael Grumley’s inspiration was for this book, but he does an amazing job of intertwining the subject matter of human trafficking and A.I. technology that is being used for a positive purpose. I love the characters that Michael develops in this book and the action-packed plot that is so well written. It was very hard to put this book down because I couldn’t wait to find out what happened next! Everything about this story feels so real. Excellent read!!!

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  4. toni

    Can’t believe I almost skipped this!
    I loved the breakthrough series and all his other books so why I almost skipped this is beyond me but I LOVED it. I loved Mike and I can’t wait to have all the characters be expanded on in the next book in the series. I usually go back and forth reading two books at a time but I read this one straight through without switching. That’s a testament to my distractedness. Very fast paced and Mr Grumley, per usual, knows his stuff and does the research. I do love the sciency facts in here. It just pulls it all together. I don’t think he could top his breakthrough series (because holy cow what a masterpiece) but this book was absolutely fantastic and I love the writing style. There was one wrong use of the word “you’re” and I don’t even care because the story is the point and the story was fantabulous.

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  5. TLW

    Some may call it Fiction – but is it really????
    Rollback, the book, is a great read from start to finish. Michael Grumley books are fast paced and makes you think so you hardly can put the book down because the story sticks in your mind. The technological processes he writes his stories around are up to date, solidly put together, and happening or a possibility to happening in our world. Don’t miss a wonderful writer that puts together an enjoyable and thought provoking story. If you haven’t check out his other series as they are just as interesting and a very good read. Can it happen or has it already?

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  6. Peggy Henderson

    Exciting new series. I’m a fan.
    Micheal Grumly continues to lure me in. I’ve read his ‘Breakthrough’ series. While this storyline differs, I really enjoy reading this author’s books. This is a fascinating story that will keep you hooked.

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  7. Wandafulyou

    riveting
    Ever since the Breakthrough series I have looked with eager anticipation for anything new from Michael Grumley. This book kept me reading well past midnight into the dark hours of the night. He takes modern technology to new levels with hope and always offers the best of humanity to win out over evil. I couldn’t bear one of those stories where the good loses. Thank you, Mr. Grumley.

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  8. Libby N

    Not his best
    Just came off of reading Grumley’s “Revival” series and launched into this book. And this book is a let down. The characters are shallow and…they talk too much. There are chapters where there is nothing but boring, unrealistic conversation. The conversation that takes place between Mansfield and Bruni the first time they meet is painfully long and repetitive. The action is sporadic. It is barely keeping my interest.I like Michael Grumley as an author and have enjoyed many of his books. LOVED the Revival series and wish there were more books to come. But I am not thrilled with Rollback. It lacks energy and good characters.

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  9. Dave Henly

    Great story – looking forward to #3!

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  10. John Lund

    It’s a murder mystery not a sci-fi novel.But the “use the old people“ premise is great.This is an enjoyable day of reading.

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  11. P. Naud

    I like the way the history is developed making use of AI to stich images to solve various crimes

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  12. Longtime Customer

    I would absolutely recommend this book and author.. what an imagination!

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