Celebrity guests check in to a 'Nightmare Clinic' in an attempt to overcome their nightmares.
Aubrey Plaza
Herself / Julie Jacobs
Jack McBrayer
Mr. McDougal
Pam Murphy
Mrs. McDougal
Lucas Barker
Timmy
Matt Besser
Monica's dad
Nathan Fillion
Himself
Seth Kirschner
Paul
Darcy Fowler
Monica
