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Kelly and Scotty are assigned to protect a pair of Japanese noblemen, father and son, from assassination at the hands of a neofascist group called Tigers of Heaven. Hoping to destroy the villains by forcing them to "lose face" in the eyes of their followers, the agents are stymied by the fact that none of the parties involved-not even the would-be victims-can be completely trusted. "Tigers of Heaven" was written by I Spy story editors/producers Morton Fine and David Friedkin. The episode was originally broadcast on December 15, 1965.