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Finally we have the description for episode 19.

“The Chitters” — (9:00-10:00 p.m. ET)
SAM AND DEAN MEET A NEW PAIR OF HUNTERS – In a small town in Colorado, mysterious disappearances happen every 27 years. Sam (Jared Padalecki) and Dean (Jensen Ackles) head to the town to investigate and meet two hunters who have a personal vendetta against these once-in-a-generation monsters. Eduardo Sanchez directed the episode written by Nancy Won (#1119). Original airdate 4/27/2016.
It sounds like another stand alone monster and a new one! A pair of hunters with a personal vendetta, sounds familiar. Are you looking forward to another MOTW while we wait for the end of the season? What kind of monster do you think this is? Let us know in the comments or in the discussion thread for episode 19.