Lise is revealed as a spy and most of the 666th is imprisoned. Theodor and Katia barely manage to flee in time.  The Stasi complete their takeover of East Germany even as a 200,000 strong army of BETA comes down on Berlin.
East Berlin 
Palace of the Republic
برلين الشّرقيّة
القصر الجمهوريّ
Ostberlin
Palast der Republik
Berlín Este
Palacio de la República
Berlín Este
Palacio de la República
BERLIN-EST
PALAIS DE LA RÉPUBLIQUE
Berlino Est
 Palazzo della Repubblica
Berlim Oriental
Palácio da República