In the aftermath of the car crash, the surviving Winchesters go to the hospital, where one is stalked by a Reaper while another must consider sacrificing himself to save the others.

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After the events at the hospital, the brothers have no idea where the demon that killed their mother is hiding. While biding their time trying to come up with an idea, they investigate murders committed by a killer clown.

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Sam and Dean encounter a vampire hunter whose obsession may get them all killed.

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Sam and Dean meet Andy Gallagher, a slacker with psychic powers of persuasion. Once the brothers learn that Andy's family was visited by the Demon, Sam wonders if he could be one of the special children.

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Sam and Dean meet up with America's first serial killer, while Jo lies to her mother about going to Vegas and joins Sam and Dean to help them on their hunt.

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The people of a small town have been selling their souls to a crossroad demon.

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Sam meets a woman who shares his ability to have visions, and she warns him that she has seen the future where he dies in an explosion.

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Sam contacts Dean after being missing for a week. When they reunite, Dean finds Sam covered in blood and with no recollection of what happened.

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The Winchester brothers seek the help of their family friend Bobby while investigating a series of unexplained happenings on a local college campus.

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Sam and Dean investigate a brutal death and discover that the killer is a lycanthrope: a werewolf.

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Dean is attacked by a Djinn and finds himself in a new reality where his mother is still alive and a mysterious woman holds the key to everything.

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Sam and other "special children" are abducted by the Yellow-Eyed Demon and taken to a ghost town, where the ultimate battle must start.

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Dean hits an emotional rock bottom after a devastating personal loss. The Yellow Eyed Demon begins a calculated strategic move to unleash the armies of hell.

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These are my thoughts on season 2 of Supernatural.