S1, E7: Fidelity

Available on iTunes, USA, E!, Oxygen, Peacock, Bravo, Syfy, Telemundo, Prime Video, NBC
When a young housewife falls ill, House suspects that she has contracted a rare sexually transmitted disease, but she and her husband (Dominic Purcell) each deny having an affair.
Starring Dominic Purcell, Myndy Crist, Brennan Elliott