There's much less running around libraries than in Dan Brown's magnum opus, but there is a gigantic dollop of religion, Masonic history and connections to the ancient past overlaying the search for a bio-weapon.
Elements of the book reminded me of the work of the late, great author Craig Thomas - though whether this was partly because the hero lives in Thomas' old home town of Lichfield I can't be sure. As for the hero, one Toby Ashe, himself an author - in addition to working for the British secret intelligence service - I found it difficult to like him. Obviously, as the hero, he had frequently to Do The Right Thing, but I found the other aspects of his character jarred with this.
What also jarred was the author's insistence on demonstrating the depth of his research at every opportunity, sometimes to the detriment of the rhythm of the novel. I didn't need to know that our hero drives a Saab 9-3 convertible, painted to special order in Rosso Bologna, nor that it was the 110-inch wheelbase model of Land Rover that transported him into the Kurdish hills, when he wasn't being driven around Iraq in a BMW armour-plated to Level 5, or a Mercedes with Level 7 protection.
The action sequences were well written and the supporting characters, though largely a mixture of standard archetypes, were reasonably entertaining, but I felt that in trying to shoehorn in details from his research, the author sacrificed the pacing that a good thriller needs.