Why are people disappearing once every 27 years in a small Colorado town?
That was the main question on Supernatural Season 11 Episode 19 as Sam and Dean were forced to investigate a spate of disappearances.
When Sam and Dean arrived in the small town, they realized something wasn't quite right when they ran into a group of hunters who had a vendetta against the once-in-a-generation monsters.
Did the brothers manage to crack the case before it was too late?
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Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.