1x08 Βugs

After a construction worker for a new housing development dies in a sinkhole, his brain dissolving within minutes, the brothers head to Oasis Plains, Oklahoma, to investigate. There they learn of mysterious, bug-related deaths in the town. After doing research, they discover that a Native American tribe used to live in the area, but its members were murdered by cavalrymen, with the tribe's chief placing a curse on the land as he died. Sam and Dean determine that the curse will reach its climax that night, and race to warn the family living there as swarms of insects attack. They are able to fight off the bugs and survive through the night, and the insects leave at sunrise. The site is shut down temporarily as the boys discovered an unmarked Native American grave and the developer, who's family they saved from the bugs, decides to make sure it remains shut down.