In the film, Emil Brandt is a former SS officer who had been the secretary of Franz Bettmann, Chief Production Engineer of the V-2 rocket at concentration camp Mittelbau-Dora/Mittelwerk. (Bettmann is only a minor character in the film; he appears to be based on the real Arthur Rudolph.) The Soviets, the Americans, and the British all try to get hold of Emil Brandt, for different reasons. The Americans have already detained Bettmann in a safehouse and intend to transport him to the U.S. as part of their Operation Overcast/Paperclip to have him work on their own rocket program (cf. Wernher von Braun). In the film, they are fully aware of Bettmann's role at Camp Dora and know about the slave labor used in the V-2 program, but want to cover up his involvement (because they could not lawfully employ a known war criminal), which includes eliminating Emil Brandt, whose testimony or written notes would prevent their whitewashing of Bettmann.