Faith Like a Stone, Sinking Fast (CM/SPN, PG-13, Gen)

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Title: Faith Like a Stone, Sinking Fast
Fandoms: Criminal Minds/Supernatural
Characters: Emily Prentiss, Spencer Reid, Sam Winchester, Aaron Hotchner, Jennifer Jareau, Derek Morgan, David Rossi; Castiel, Dean Winchester
Pairings: None
Rating: PG-13
Word Count: 9160
Spoilers: Through 5.10 of Supernatural and 5.08 of Criminal Minds.
Warnings: Serious off-screen gore and violence
Notes: Written for xover_exchange. My thanks to bluflaming and scrollgirl for the excellent beta work.

Summary: Castiel has a mission for Emily Prentiss.

Faith Like a Stone, Sinking Fast