Near the northeastern edge of Berlin, in what was once part of East Germany (aka the German Democratic Republic or GDR), is a place called Mörderberg (Killer Mountain), which contains a cluster of derelict buildings. Abandoned since the 1990s, they were once the barracks of the GDR’s Volkspolizei-Bereitschaft (People’s Police on Standby), which was under the command of that now-extinct country’s fearful Interior Ministry. During the final weeks of the