Quotes
Ernst Jürgen: In the Stasi, we had a basic principle: ask enough questions and a man who is lying will eventually change his story. But the man who tells the truth cannot change his, however unlikely his story sounds.
Trivia
Throughout the movie if you look in the background at the various graffiti tags, one in particular stands out. Look for the tag OZ. In almost every scene that has graffiti on the walls you 'll see it somewhere in the background, sometimes more than once. Although it is common for graffiti artists to leave multiple marks in multiple areas, Berlin is a big city and it can be spotted too often for it to be coincidence. See more...
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Unknown (2011) - 6 mistakes
Directed by Jaume Collet-Serra, starring Aidan Quinn, Diane Kruger, Frank Langella, January Jones, Liam Neeson (add more)