Premise: William Thomas Harris III (born April 11, 1940) is an American writer, best known for a series of suspense novels about his most famous character, Hannibal Lecter. All of his works have been made into films, the most notable being the multi-Oscar-winning "The Silence of the Lambs", which became only the third film in Academy Award history to sweep the Oscars in major categories.
Hypothesis: Only one of William Thomas Harris III's novels have been made into a film