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Depending on what you are looking for, here are the two most likely stories associated with it: 1. The True Historical Story: Operation Anthropoid
This is the real-life account of , the 1942 mission to assassinate Reinhard Heydrich , the "Butcher of Prague" and a primary architect of the Holocaust. The story follows two parachutists, Jozef Gabčík and Jan Kubiš , who were sent from London to Nazi-occupied Prague to carry out the dangerous mission. It culminates in a famous last stand inside a Prague church after the city was locked down in a brutal Nazi reprisal. 2. The Meta-Fictional Story: Laurent Binet's Novel Depending on what you are looking for, here
The title stands for the German phrase " Himmlers Hirn heißt Heydrich " —. Jozef Gabčík and Jan Kubiš