Debra Leigh

"Stairmaggedon" strikes the office when the elevator goes out and everyone is forced to take the stairs. Dwight (Rainn Wilson) forces Stanley (Leslie David Baker) to do an important sales call. Pam (Jenna Fischer) and Jim (John Krasinski) find comfort in talking with Nellie (Catherine Tate) and Toby (Paul Lieberstein) about marital troubles. Meanwhile, Angela (Angela Kinsey) stands by her man.

A serial killer who targets random victims in highly visible places to create a sense of public fear is the subject of a BAU investigation.

Kensi and Deeks pose as cult members in hopes of rescuing a former Department of Defense employee.

After a heated anti-immigration rally turns into a riot, an alt-right, white-nationalist leader is found murdered, and Cavanaugh reluctantly seeks Tanner's help to sort through the dozens of suspects, despite the biases of the team and the crowd; Tanner and Alex face Mia's past when her private life becomes public.