1.15 "The Benders"

After hearing in 'smallville' Hibbing, while masquerading as Minnesota state police, a boy's story about a monster probably was inspired by a Godzilla movie, Sam points out the county was marked by dad as suspicious and has the state's highest ratio of disappearances, but Dean just wants to relax, at least till the morning, until Sam disappears on the parking lot. Dean teams up with local police woman Kathleen, who even after finding out they impersonated cops decides not to arrest him before Sam is found, because her own brother also disappeared years earlier. Their search reaches the large, lonely house where a sinister human family keeps Sam and others in cages, and their intentions at least are monstrous...