Dr. House: 2г—3 -

House discovers that the sisters were all taking a specific "natural" performance-enhancing supplement to stay thin for gymnastics. Because of a rare phenomenon in female development (skewed X-inactivation), each sister's body processed the supplement's toxins differently:

The title refers to a high-stakes medical mystery where Dr. Gregory House must solve a case involving a set of triplets whose identical DNA makes diagnosing their divergent symptoms a nightmare . The Case of the Mirror Triplets Dr. House: 2Г—3

: Cuddy pressures House to find a solution before Maya’s lungs fail completely. Meanwhile, House is distracted by Wilson, who has started "triplet-dating" (dating a woman who is also a triplet), leading to a series of pranks about identity and individuality. The "Eureka" Moment House discovers that the sisters were all taking

had a delayed reaction that eventually triggered a cytokine storm. The Resolution The Case of the Mirror Triplets : Cuddy

House observes the sisters in their shared room. He notices that while they look identical, Maya (the one with lung failure) has a slightly different callus on her finger. He realizes she isn't just a gymnast; she’s a secret smoker. But that doesn't explain Lea's seizures.