To Catch a Spy

To most patrons of a certain Berlin cafe, the man with the magazine under his arm is just another customer. But to the three or four other spies watching him, he's one of them. Only problem - which side is he on - this week? In a world where loyalties change with the wind - or a better offer - counterespionage is a necessity. Enter this complex maze where friends suddenly become foes - and you may be the next target.