Last week‘s episode of Supernatural left us with a "to be continued" that forced me to throw things at my TV. "I Know What You Did Last Summer" came to an end with Castiel and Uriel arriving to kill Anna, who can overhear their conversations and possibly intercept the text messages they swap on their heavenly BlackBerries. Before that shocking conclusion, we learned that Sam and Ruby got down and dirty while Dean was in Hell, and we also met a frightening new demon named Alastair. Dean recognized the beast from his stint down under, but the nature of their relationship was left unclear.
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