Dick Roman calls Crowley and offers him a deal. Give the Winchesters fake blood and demons can have Canada as their feeding ground. Crowley agrees and offers Roman a standard contract. The two spend hours going over every aspect until Roman thinks he’s safe.
Crowley has a loophole and double crosses Dick. Sam, Dean, Cas and Meg go on the assault. They grab the Metallicar and Meg drives it into the Sucrocorp sign and starts chopping off Leviathan heads. Dick has guessed Crowley has double crossed him and made the other Leviathans double as him, so there are literally dozens of him walking around.
Bobby nearly kills Sam and the innocent women he possessed as he goes all vengeful spirit on them. He regains control and decides it’s time for him move on. There’s a quaint goodbye and then they burn the flask sending Bobby off into the great unknown.
Cas is able to sniff out the real Dick Roman and they are able to finally kill him, but it has consequences. Killing Roman sent out a shockwave that landed Dean and Cas in purgatory surrounded by countless monsters that have died.
Sam’s left dumbfounded and Crowley says goodbye taking the prophet with him. Two demons grab Meg and we assume take her to Crowley. The season ends with monsters circling around Dean and Cas has disappeared. It looks like we’ll know more in six months. See you then.