Night School by Lee Child (Author)

It�s just a voice plucked from the air: �The American wants a hundred million dollars�.
For what? Who from? It�s 1996, and the Soviets are long gone. But now there�s a new enemy. In an apartment in Hamburg, a group of smartly-dressed young Saudis are planning something big.
In the morning they gave Reacher a medal, and in the afternoon they sent him back to school.
Jack Reacher is fresh off a secret mission. The Army pats him on the back and sends him to a school with only three students: Reacher, an FBI agent, and a CIA analyst. Their assignment? To find that American. And what he�s selling. And to whom. There is serious shit going on, signs of a world gone mad.
Night School takes Reacher back to his army days, but this time he�s not in uniform. With trusted sergeant Frances Neagley at his side, he must carry the fate of the world on his shoulders, in a wired, fiendishly clever new adventure that will make the cold sweat trickle down your spine.