"I don't think so," Marcus answers. "And yes, he's in my bedroom now, he needs... the exorcism was difficult for both of us, but for him more than me. It's a different kind of demon, one I've never seen before and Sam had to call on things I think he hasn't touched in a very long time. He needs some help now. Dealing with that."

Marcus doesn't want to get into the details, not because he doesn't think Verity needs to be protected from them, but because these particular details aren't his to tell. He doubts very much Sam wants it to be public knowledge that he'd had to ingest demon blood in order to help finish the exorcism.