A pro cyclist admits to taking performance-enhancing drugs.

An AIDS patient stalks House, while House and Stacy stalk a rat in her attic.

A patient's death prompts an investigation into whether Chase or House may have been responsible.

House takes a bet on deciphering whether a fellow gambler who has cried wolf too many times now has a deadly illness.

While the team struggles with a patient's unintelligible speech, the heat turns up between House and Stacy when they're out of town.

An untruthful mother with paranoia jeopardizes her own treatment while House and Stacy rekindle their relationship.

The team is stumped with a diagnosis when they can't run tests on a burn victim. House sets out to prove a former colleague wrong.

A teenage supermodel has a heroin addiction and a male patient with high estrogen suffers his wife's pregnancy side effects.