A fast-paced popcorn read. Competently written, but I did find it a little formulaic: the hero is in danger, gets (apparent) help from someone he doesn't trust who promptly dies, rinse and repeat. And it must be said, I didn't find the protagonist remotely convincing - a fairly intelligent bloke, sure, but with no preparation he manages to outwit any number of spy agencies and operatives with decades of training and experience? I don't think so.

It doesn't help that the whole underlying drama was set in motion on the basis of that horribly trite device of people who could clear everything up if they'd only talk to each other, but don't. Granted, trust doesn't come easily to spies but they were married for heaven's sake, and genuinely so.