Fandoms: Criminal Minds/Supernatural
Characters: Emily Prentiss, Spencer Reid, Sam Winchester, Aaron Hotchner, Jennifer Jareau, Derek Morgan, David Rossi; Castiel, Dean Winchester
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