Marcie Lynn Ross

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.

The girls are forced to improvise when Abbi gets her period on a plane and doesn't have access to a tampon.

Frankie and Mike’s romantic house-sitting weekend is jeopardized by the home’s technical difficulties, and the bratty neighborhood Glossner kids invade the Heck household.

The agents attempt to "connect the dots" when a series of strange deaths are linked to a man who resides in a house that is an exact replica of the house from "The Brady Bunch" television series - complete with the Bradys themselves.

While searching for missing 37-year-old X-ray technician Teddy Cota (David Eigenberg), the team discovers that Teddy long believed that when he was a child, he was abducted by aliens. The missing man's pregnant ex-girlfriend explains that she ended her relationship with him after he confessed that he feared the extraterrestrials would return for him and their baby. After a friend at Teddy's alien abductees support group claims that he and Teddy had recently been trailed by two menacing "men in black," it seems the team's only normal lead is from a neighbor who saw Teddy let an agitated man into his apartment the night he disappeared. Meanwhile, Jack handles the awkwardness of displacing Vivian as the team's leader, and his lawyer, Ed Felder (recurring guest star Timothy Busfield), tells him that his estranged wife is planning to use his affair with Samantha to prove he's an unfit parent in their custody battle.