This writing is the last in a series of three books about plays that were used to construct the conspiracy for the assassination of President Kennedy. In this final writing, the focus concerns how the mock trial as the story line of "Man of La Mancha" was used as the basis for the proceedings of the Warren Commission. The Warren Commission was indeed a mock trial, formulating a motive and verdict of guilty for Lee Harvey Oswald as the lone shooter of Mr. Kennedy, despite Representative Gerald Ford resembling the part of Dr. Carrasco in the play as Mr. Ford tried to get not only those on the Commission to admit to their pretenses, but especially doing so regarding one of Oswald's main eyewitnesses, Howard Brennan. This writing also explores how the Commission passed over two eyewitnesses' testimony that should have been the basis for two reasonable doubts for Mr. Oswald. Overall, what the use of these plays by the clever CIA agent who crafted this part of the conspiracy has revealed is that despite the fact that he was a part of the conspiracy, Lee Harvey Oswald could have lived.