The Circle Audiobook By Michael C. Grumley cover art

The Circle

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The Circle

By: Michael C. Grumley
Narrated by: Scott Brick
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Mike Mansfield’s cases are never easy. They’re dangerous and unpredictable, but there are patterns. Patterns in how criminals act and how they think. But this time, something is off. After a recent rescue, the emerging details seem very odd to Mansfield. Of his three culprits, one has no clue who he was working for, the second has no desire to be released from police custody, and the third has vanished altogether. Moreover, the level of sophistication involved in their operation is beyond anything he's seen before, and hints at something much more ominous.

Unfortunately, what Mansfield and his invisibles don't know yet … is that they have severely underestimated what they’re up against.

©2026 Michael C. Grumley (P)2026 Recorded Books Historical Mystery Police Procedurals Political Spies & Politics Technothrillers Thriller & Suspense
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I'm a huge fan of this series and the characters. The narration is top notch as well. This one's plot line is good but not as captivating as the first two books in this series. I felt the climax was a bit abrupt and 'The Circle' deserved more of a back story. All in all though - great book and would highly recommend.

Love this series!

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Michael C Grumley is one of those authors who I will simply buy the book without reading reviews. Fresh, relevant, cutting edge.

Great Storytelling

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This series is getting as addictive as Grumley’s others. Such an entertaining writer with well researched and believable content. Loved it! And Scott Brick is as good as ever in his delivery! Thanks guys! Can’t wait for the next in the series.

Thrilling Twists as Only Grumley Can Deliver

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The Circle is another incredible addition to the Rollback series by Michael C. Grumley. From the very first chapter, the story grabs your attention and never lets go. Every chapter ends in a way that makes you think, "Just one more," and before you know it, hours have gone by. This is the definition of a can't-put-it-down book.

One of the greatest strengths of this series is its characters. They feel like real people—intelligent, brave, flawed, and deeply likable. I've become so invested in them that they feel like old friends, and I genuinely care about what happens next. Their relationships and teamwork are just as compelling as the action and mystery.

Michael C. Grumley has a wonderful talent for blending science, suspense, adventure, and emotion into a story that is both exciting and thought-provoking. The pacing is perfect, with twists that kept me guessing until the very end.

Now comes the hardest part... waiting for Book 4! I honestly don't know how I'm going to be patient because I'm so anxious to find out what happens next. If the next installment is anything like The Circle, it's going to be another unforgettable ride.

If you enjoy intelligent thrillers with memorable characters and nonstop suspense, do yourself a favor and start the Rollback series. You won't regret it.

Amazing, great writing!

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Once again the good guys get the bad guys by operating on the fringe of the law. The longer I live, the more I see that this is necessary, albeit unfortunate. Michael Grumley has a great cast of characters here, and he spins a great who-done-it, always leaving room for the next one. I'm looking forward to it. Thanks Mike!

The gray area of justice!

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