Evan Peters

Michael (Golden Globe winner Steve Carell) refuses to fire the new office assistant (guest star Evan Peters) after everyone complains about his bad attitude. Andy (Ed Helms) plays it cool after Erin (Ellie Kemper) shows interest in another man. Meanwhile, Pam (Jenna Fischer) tries to impress Jim (John Krasinski) by pulling an office prank of her own. Leslie David Baker, Brian Baumgartner, Kate Flannery, Mindy Kaling, Angela Kinsey, Phyllis Smith, Oscar Nunez, Creed Bratton, Paul Lieberstein, B.J. Novak, Craig Robinson, Rainn Wilson, and Zach Woods also star.

A gun-wielding man from the waiting room at the Princeton-Plainsboro clinic takes House, Thirteen and several patients from the waiting room hostage in Cuddy’s office. The man claims to be sick with a long undiagnosed illness and demands medical attention from the best doctor in the hospital, threatening to kill any hostages necessary along the way. With a room full of already sick patients, House must use them as guinea pigs to assure the hostage-taker that the medications he is administering to him are legitimate. As Cuddy and the rest of House’s team communicate with House over the phone to run tests and offer possible diagnoses, they ponder the possibility that the hostage-taker has nothing physically wrong with him and that everyone in Cuddy’s office could wind up dead. With one hostage already shot, Thirteen wagers her own already diminished health as she simultaneously receives the experimental treatments the hostage is receiving. Her life lies in danger as House’s own determination to diagnose the hostage-taker threatens to thwart the SWAT team’s plan to put an end to the standoff.

The BAU profiles a child abductor who may have been keeping children for more than eight years.

As Peyton's news spreads, Mouth and Millicent struggle to remain a couple. Haley and Nathan spend a night out while Peyton and Lucas babysit Jamie.

When Peyton's pregnancy is threatened, Lucas struggles to pick up the pieces. Victoria (recurring guest star Daphne Zuniga) returns to lure Brooke back to Clothes Over Bros. Haley and Nathan clash over the decision to pull Jamie from his school. And Mouth tries to mend his relationship with Millicent.