Mike Walton Books in Order
This page lists the Mike Walton books by Simon Gervais in order, with quick summaries, series background, and a clear guide to where to start.
Last updated: July 4, 2026
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Publication Order
4 books
The Thin Black Line
by Simon Gervais
2015
After terrorism destroys his home and leaves him badly injured, covert operative Mike Walton joins forces with his wife Lisa and a private security group to stop Sheik Al-Assad from crashing the Western economy with more attacks.
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A Long Gray Line (Short Story)
by Simon Gervais
2016
Mike and Lisa Walton return for a shorter mission when IMSI faces two threats at once: a plot that could wreck the stock market and unfinished business from their last operation. Compact, tense, and built for speed.
A Red Dotted Line
by Simon Gervais
2016
Sent to Moscow after an attempt on their boss's life, Mike and Lisa Walton lose their cover almost at once. While the Sheik closes in, clues point to a revived Soviet biological warfare program and the risk of global disaster.
A Thick Crimson Line
by Simon Gervais
2018
As failed Iran peace talks spiral and traitors strike inside American and Canadian governments, Mike Walton has seventy-two hours to find the truth. The mission runs from Athens to New York with war, markets, and his sanity all under pressure.
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