Jack's aid is enlisted by a former Army colleague. It seems someone's killing off the members of their old team. Together they get the survivors of the team together to find out who killed them and bring them to their own brand of justice. We all know you don't want to piss off Jack Reacher but this time he's even tougher than before, because it's very personal this time around. He surprised even me, a long time reader of the series, with his occasional ruthlessness. Still, it's a risky move to make a series star this callous and still manage to give him mass market appeal and Lee Child pulls it off.
The plot seemed a bit thin this time but the action scenes (for instance in a helicopter) are great and it's nice to see Reacher interact with his old team, that consists of a bit stereotypical but enjoyable characters.