“There has to be a way out of here” Dean said frustrated.
“You think we haven’t tried to find one?” Ellen fired back.
“Not hard enough” Dean snapped. He turned to Anna. “If a fallen angel who’s literally lost his mind can zap himself out of here then why can’t you do something?”
Anna frowned her eyebrows. “You are not putting this on me” she said angry. “Crazy or not, Cas is a lot more powerful than I am. But I don’t think Cas actually zapped himself out of here. I think someone brought him back to earth. We can’t all be daddy’s favorite” Anna finished with a bitter undertone. Dean almost believed Anna was jealous.
Back on earth, in an abandoned and ruinous building someone drew a sigil on a wall with blood. Then he took a step back.

“Ianua Magna Purgatorii
Clausa Est Ob Nos
Lumine Eius Ab Oculis
Nostris Retento

Sed Nunc Stamus Ad Limen Huius
Ianuae Magnae Et Demisse
Fideliter Perhonorifice
Paramus Aperire Eam

Creaturae Terrificae Quarum Ungulae
Et Dentes Nunquam Tetigerunt
Carnem Humanam Aperit Fauces
Eius Ad Mundum Nostrum Nunc
Ianua Magna
Aperta Tandem!”

The cave was filled with a bright light and Dean, Sam, Jo and Ellen shut their eyes, thinking something was wrong with Anna; they didn’t want to turn blind.
Dean was the first to open them again. He blinked to make sure his eyes weren’t cheating him.
“Guys, I think it’s safe” Dean said.
They opened their eyes and Dean heard Jo and Ellen gasp.
“Are we back on earth?” Anna wanted to know.
“I would say yes” Dean answered.
“But how?” Sam wanted to know.
“The question’s not how” Anna said. “The question’s who”