The British try to fool the Nazis into thinking they've developed a super-secret Death Ray - with unintended consequences. This episode of X Minus One originally aired on June 19, 1956.X Minus One premiered in April 1955 on NBC and ran until January 1958. Like its predecessor series, Dimension X, X Minus One featured stories by the greatest names in modern science fiction: Ray Bradbury, Isaac Asimov, Robert Heinlein, Clifford Simak, Robert Bloch, and many more.