Monk (Tony Shalhoub) agrees to investigate the "accidental" deaths of a wealthy couple who lived next door to Natalie's parents. The assignment requires Monk to go undercover as the butler for the couple's closest relative, obnoxious young billionaire Paul Buchanan (Sean Austin). His new job is perfectly suited to Monk's obsessive-compulsive nature, and soon he emerges as the "perfect" gentleman's gentleman, maintaining order in Buchanan's household with a firm but steady hand. However, Monk might not be so secure in this position were he aware that his predecessor, the late Mr. Stilson (David St. James), had been "fired" by Buchanan with a hunting pistol. Incidentally, this is the episode in which Mr. Monk discovers that he has a brand-new phobia: Frogs. ~ Hal Erickson, Rovi