Long before the play begins, Oedipus became king of Thebes by solving the riddle of the Sphinx. His sharp mind and quickness to action have made him an admired and successful leader. When the priests come to petition him after a plague strikes the city, he has already set into motion two plans to deal with the city's crisis. Throughout the play, he makes decisions boldly and quickly, if not always wisely. In his attempts to discover the truth about the murder of Laius, he falsely accuses Creon and Tiresias of treachery, and even forces the reluctant shepherd to tell his story, which publicly reveals Oedipus to be the murderer and husband of his own mother. The same leadership skills that have brought him fame and success—decisive action, a desire to solve mysteries using his intellect—drive him to his own destruction.