Stephen DeCordova

When Henry (guest star Howard Hesseman) experiences a seizure but is not aware of it while it’s happening, House takes on the case. The team’s differential diagnosis points to a bacterial infection, but Henry suffers a heart attack before the treatment for his infection is able to work, prompting the need for a heart transplant. Racing to find a heart donor in time to treat Henry before the infection kills him, House finds an organ donor who’s been declared unfit due to a mysterious illness.

When Seth visits Summer at Brown, he finds an empty dorm room. Meanwhile, Sandy and Kirsten take advantage of an opportunity to bond with Ryan, who is in a Taylor-induced haze.