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Jack Carson stars as Harvey Hunnicutt, a fast-talking used car salesman to whom The Truth is a total stranger. Hunnicutt's prevaricating nature undergoes a terrifying about-face when a spooky old man (George Chandler sells Harvey a dilapidated Model A Ford -- one which compels its owner to tell the truth, the whole truth, and nothing but the truth. The punchline of this episode will be amusing only to those who lived through the darkest days of the Cold War (though a passing reference to "Jack Kennedy" has been excised from most existing prints). Future Laugh-In regular Arte Johnson appears as Hunnicutt's long-suffering assistant. One of six Twilight Zone episodes shot on videotape, "The Whole Truth" was written by Rod Serling and was initially telecast on January 20, 1961.