Dated October 26, 2009:
While playing with Terpsichore, John and Dean are shocked to discover one Sam Winchester in their midst. As always, things are complicated with the Winchester boys, and nothing goes smoothly. Dean tries to reassure Sam as best he can while leading him off to meet Jessica, and though things are obviously strained, there's still some room for hope. Things go a little better when Sam's reunited with his girlfriend, but there are a lot of unanswered questions and doubts on both sides.
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HERE | PG]
After the boys leave to catch up, John heads to Bobby's to tell him about Sam's arrival -- and the news Sam brings with him about the apocalypse.
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HERE | PG]
Later, John finds Sharon in the kitchen and fills her in.
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HERE | PG]
Later on, Sam heads to the Winchester. After the day he's had, he needs a drink. He runs into a few familiar faces, and a few completely unfamiliar faces that know his.
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HERE | PG]
SPOILERS FOR SEASON 4 ALL AROUND