Shifting Allegiances for monsterfan

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Title: Shifting Allegiances
Author: mandraco
Recipient: monsterfan
Rating: PG
Warnings: Minor character death. Mild language.
Author's Notes: Thanks to sameuspegasus for the beta and to briarwood for running this fic exchange.
Summary: Mostly prompt three (Cas and Crowley as frenemies) with smatterings of prompt two (gap year between season five and six).
Crowley comes to Castiel with a different idea for taking down Raphael.

( Shifting Allegiances for monsterfan )