This just in from Harper Collins! Waiting for me on my Kindle, Spy Trade by Matthew Dunn:

When a mission goes awry in Syria, senior CIA officer Bob Oakland is captured by aspiring members of ISIS, who demand the release of one of their own, Arzam Saud, in U.S. captivity. When their hands are tied by Washington’s refusal to negotiate, the CIA turns to MI6 officer Will Cochrane to find out what’s really going on. The threats are escalating quickly, and in order to save the CIA officer, Cochrane must uncover why Saud is truly so important . . .