Was the Stasi shorthanded, or what?
I'm just wondering why the Stasi apparently had only one officer assigned to watch such a high-level defector such as Prof. Anderson. Maybe it was summer and everyone was on vacation?
The easiest way to insert a double agent is to use a defector, c'mon. So they would have had at least two guys watching Anderson (maybe one watching the girl friend) and more watching the agents watching the professor.
Of coruse, if there were so many agents, you'd have to cast them... And Anderson would've never gotten off the farm, if he had made it that far. It would've been a very short, very sad movie.