This feature-length espionage thriller is an expanded version of an episode of the TV series The Man From U.N.C.L.E. entitled "The Alexander the Great Affair." Mr. Alexander (Rip Torn) is a power-hungry multi-millionaire who wants to take over the world from his compound in Greece, with Alexander the Great serving as his role model. Alexander starts his bid for world domination in a small but strategically crucial Asian nation, where he plans to assassinate the President and render his chain of command helpless with a chemical weapon that destroys a person's will to win. International agents Napoleon Solo (Robert Vaughn) and Illya Kuryakin (David McCallum) are sent out to stop him, while Alexander's wife Tracey (Dorothy Provine) has her own ideas of how to deal with him. The original airing of "The Alexander The Great Affair" led off the second (and most popular) season of the TV series; the theatrical release of One Spy Too Many proved somewhat less successful.