Buffy&Faith (Buffy the Vampire Slayer)

Cas had finished cutting letters out of Frederik’s chest. He conjured a needle and thread and pushed it through the letters, combining them and making some sort of necklace. He walked to Frederik and hung the collar around his neck.
He noticed how Frederik was losing conscience. His head hung down, drool came out of his mouth and he was deathly pale.
“Hey, stay up! Don’t fall asleep. We’re not done yet” Cas snarled and he punched Frederik in the face. Frederik opened his eyes, forgot for a segundo where he was, then remembered por seeing Cas.
“What are tu still doing here? That...