Richard tries to get Adele into Derek and Meredith's Alzheimer's trial; Arizona and Mark try to plan a baby shower for Callie.
House and Cuddy tackle a suspected meningitis outbreak on a plane. Back at the hospital, Wilson and the team treat a woman suffering mysterious seizures.
Holmes engages an old foe to protect his father, after learning Morland is in danger. Holmes and Watson search for a killer connected to the tobacco industry.
The team takes on the case of a young boy from the Congo who has severe congenital heart anomalies. Murphy's latest encounter with his neighbour Lea has him confused.
Whilst investigating a construction site, Lightman and the team attempt to save three men trapped inside the wreckage of a collapsed building. Meanwhile, Ellie and Torres try to determine how legitimate a billionaire's lover is.