The Gun Seller, by Hugh Laurie

This is a very good book made better by the surprise of how good it is.   (The author is a television actor and I was appropriately cautious about my expectations for his novel.)

It was a bit of a rough start, the hero inelegantly demonstrating his snarky personality in the first chapter or two.   But it all came together soon after, with a compelling plot and fun dialog.

Bravo.  Mr Laurie is quite accomplished.