Lots of spook literature these days: Especially noteworthy are two new ones -- two! -- by former CIA operative Gary Berntsen, whose memoir of leading the first agency team into Afghanistan after 9/11 and cornering Osama bin Laden, Jawbreaker,  read like a true-life thriller.  

Now comes The Walk-In (written with novelist Ralph Pezzullo), a fictional thriller involving an Iranian defector that seems awfully close to reality, even as it follows conventional plot lines -- renegade CIA agent saves the world and all that.  Pub date is Aug. 12.