Sam and Dean are driven insane by tortured spirits.
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10. Asylum - Sam and Dean are driven insane by tortured spirits.
The brothers meet a ghostly hitchhiker in a California town.
The brothers investigate a superstrong Wendigo in Colorado.
An angry, water-traveling spirit takes revenge in Wisconsin.
Sam and Dean battle a phantom during an airplane flight.
Bloody Mary can travel through reflective surfaces and kill.
A murdering shape-shifter adopts Dean's likeness.
In an Iowa college town, Sam and Dean encounter Hook Man.
A construction worker is killed by insects in his brain.
A poltergeist inhabits the brothers' childhood home.
Dean learns farmers are sacrificing couples to a pagan god.
After Dean is electrocuted, Sam contacts a healing preacher.
Dean's first love asks him to investigate racial murders.
A reclusive son uses telekinesis to kill his abusive family.
Kidnappers use the brothers as human prey for hunting.
Meg unleashes shadow spirits to ambush Sam and Dean.
The brothers discover a web site that is conjuring a spirit.
A witch goes into kids' bedrooms to steal their life force.
Everyone who buys a certain painting is murdered.
The Winchesters set out to destroy a demon from their past.
The Winchesters try to save a family and kill the demon.
Sam and Dean seek help to save their father.