Lots of great reviews on Amazon, I will list some of them on the Reviews page.
But I loved this one from one of the premier US spy book reviewers: From the website spyguysandgals.com “The characters are fun and interesting. The plotting is superb. And the writing style is like sitting in an easy chair, sipping a fine brandy, and listening to someone recount a great story.”
And who could not enjoy a review with this image attached? From the Canadian blog @twodogsandabook