The frightful events of Halloween force Dean Munsch to notify authorities of murders at the Institute, which leads to a surprising influx of new patients. Meanwhile,Chanel is tired of doing dirty work, so she concocts a plan that entails recruiting new patients to join the Chanels. Later, Zayday and Chanel #5 visit a person with ties to the hospital's past; and a new patient's problems have the staff going a bit mad.

Cast: Emma Roberts, Kirstie Alley, Taylor Lautner, Lea Michele, Abigail Breslin, Keke Palmer, Billie Lourd, James Earl, John Stamos, Jamie Lee Curtis, Mary Birdsong, Pablo Castelblanco, Andy Erikson, Trilby Glover, Niecy Nash