I am German and lived in east Germany as a child and in West Berlin until 1970. The series strikes me as something of a fairy story. just to give some examples: the protagonist would, as someone else stated, have to have undergone extensive training, not only in the English language - Russian was the first foreign language in East Germany - but also in West German - by 1983 the word material had diverged, reflecting the political and cultural separation since WWII. Just one example of the credibility gap: the protagonist's flight back into GDR. Controls on entering the motorway corridor were extremely strict. If you moved house from Berlin or vice versa you couldn't just pile stuff inside or on top of the car, you had to use a removal firm and itemise your goods in triplicate, down to your books. That's how claustrophobic the times were. Also, I know there was no way of stopping on the east German motorway (at least by 1970 and I would be interested to be corrected). Travel was timed, you were fined if you broke the speed limit and arrived too soon.
There are many other details that don't ring true. I accept the series is meant to be entertainment not documentary but even my husband (English) found it hard to have to suspend disbelief so often.
There are many other details that don't ring true. I accept the series is meant to be entertainment not documentary but even my husband (English) found it hard to have to suspend disbelief so often.