Night School by Lee Child (2016) Delacorte Press

Wherein Jack Reacher just got back from a mission where he had to assassinate two evil politicians in Eastern Europe and his reward is to be sent to a school – that’s not a school.  He’s joined by a CIA and an FBI agent who got the same ‘reward’.  What they’re really there for is to find a man who is selling something for 100 million to the Taliban.  It’s a game of narrowing down what they don’t know and matching it with what they can glean by going to Hamburg.  What is worth that much that can be sold by one man?