Daniel Silva wrote The Mark of the Assassin in 1998. This book is pretty much your standard terrorist/spy thriller, but not crafted like Robert Ludlum at his best. Reminder: ignore Ludlum’s current re-incarnation (literally, since he’s dead) as a “brand” for new novels. Mark of the Assassin was Silva’s second novel. If you followed that first link, you’ll see that he now has a string of similar novels. Worthy as a paperback airplane read, but not more.