A minor Bay Area earthquake yields only one fatality: San Francisco philanthropist Henry Rutherford (Ross Petty), who was apparently killed by a falling object. A longtime friend of the Rutherford family, Sharona (Bitty Schram) brings Monk (Tony Shalhoub) along to pay a condolence call to Henry's young widow Christina (Janine Theriault). But as a result of this "friendly" drop-in, Monk begins obsessively dogging Christina's trail, certain that she has committed murder. Amy Sedaris of Strangers with Candy fame makes her first series appearance as Sharona's sister Gail. ~ Hal Erickson, Rovi