Monk (Tony Shalhoub) is outraged by the news that his longtime rival Harold Krenshaw (Tim Bagley), the "pet" patient of Monk's psychiatrist Dr. Kroger (Stanley Kamel), is actually the Frisco Fly, a masked daredevil who has become a folk hero by clambering around the San Francisco skyscrapers. Especially vexing is the fact that Harold is deathly afraid of heights--and that if he is indeed the Frisco Fly, it would prove that he's been making more progress with his phobias than Monk has. But as it turns out, Harold has been set up as a (literal) fall guy by the person who has murdered the real "Frisco Fly"...a murder which Monk happens to be investigating even as we speak. ~ Hal Erickson, Rovi