Dean held his hands tightly against his ears, but Cas’ screeching still found its way in. The door opened and Meg appeared.
“Sam needs you in there. He wants to try again” she said with heavy voice. She walked past him to the bathroom.
Dean entered the room and froze at the sight of Cas’ mutilated body.
“Are you with me, Dean?” Sam asked sharp. Dean inhaled deeply through his nose.
“Let’s just get it over with” he replied.
“Exorcizamus te, omnis immundus spiritus, omnis satanica potestas, omnis incursio infernalis adversarii, omnis legio, omnis congregatio et secta diabolica...”
“Cas is never going to forgive you. Do you know that?” Lucifer said manipulative. “You couldn’t tell he was possessed, you let him kill dozens of people, you stuck your dick in his ass. Even if you can set him free, he’s never going to want to see you again. Your friendship with him is over”
“Don’t listen to him, Dean” Sam snarled. “Ergo, draco maledicte et omnis legio diabolica, adjuramus te ... cessa decipere humanas creaturas, eisque æternæ perditionìs venenum propinare...”
“Your mother’s with me, Sammy. She has a message for you. She says she wishes you were never born. Then she would still be alive and her and John and Dean would’ve had a normal life. Dean would’ve had a normal youth and be married to Lisa” Lucifer continued.
“Vade, satana, inventor et magister omnis fallaciæ, hostis humanæ salutis...”
Lucifer leaned against the chair, deliberately pressing and shoving his back against it, knowing how much agony it would cause Cas.
“Humiliare sub potenti manu Dei; contremisce et effuge, invocato a nobis sancto et terribili nomine... quem inferi tremunt... Dean, I need your help. I can’t do this alone!” Sam snapped angry. But Dean seemed unable to speak or move. All he could do was watch Lucifer torture his best friend.
“Ab insidiis diaboli, libera nos, Domine.”
“He wanted to kill those people” Lucifer smiled. “He wanted to make them suffer. He just didn’t have the balls to do it. So when I possessed him I could feel his anger and his humiliation and so I did the killing for him. He’s powerful, because of me. If you exorcise me he’ll be a shell of what he used to be”
“Ut Ecclesiam tuam secura tibi facias libertate servire, te rogamus, audi nos” Sam finished, but Lucifer still hadn’t gone anywhere.
“You don’t honestly think you’ll get rid of me that easy”