An Angel War begins in the midseason finale.
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9. Holy Terror - An Angel War begins in the midseason finale.
Sam fights Death in the season premiere.
With Abaddon out for blood, Sam and Dean kidnap Crowley.
Sam and Dean must find Castiel...before the angels do.
Sam and Dean accidentally free Dorothy, who seeks their help in killing the wicked witch.
Dean uses a spell to communicate with dogs.
Castiel enjoys life as a human.
A friend from Dean's past asks for his help with a ghost.
Sam and Dean reunite with Sheriff Mills.
Dean's best chance of saving Sam lies with Crowley.
Crowley asks for Dean's help against Abaddon.
Garth returns, but doesn't stay long.
Sam and Dean go undercover at a fancy day spa.
Sam and Dean discover that the bunker is haunted.
As Dean and Sam investigate the murder of a girl, they cross paths with the 'Ghostfacers'.
Crowley sinks deeper into his addiction.
Dean copes with the side effects of the Mark of Cain.
Metatron offers Castiel a deal.
Sheriff Mills tries to save a young girl from a vampire nest.
Sam & Dean discover monster families ruling Chicago.
Abaddon blackmails Crowley to help her kill Sam and Dean.
Tessa the Reaper is part of a conspiracy of the angels.
Sam, Dean and Castiel face Metatron in the season finale.