It's another medical mystery for House (Hugh Laurie) when 6-year-old Lucy (Bailee Madison) suffers a stroke and exhibits symptoms normally found in much older patients. Equally disturbing is the behavior of Lucy's 8-year-old brother Jasper (Slade Pearce), who has apparently developed an adult-level sex drive. The youngster now has a burning desire for Cameron (Jennifer Morrison--who is already having enough trouble vis-à-vis her disintegrating relationship with Chase (Jesse Spencer). Elsewhere, a jealous House plans to crash a theater party when Wilson (Robert Sean Leonard) escorts Cuddy (Lisa Edelstein) to a show. ~ Hal Erickson, Rovi