"You're the vampire expert, you tell me."

You are the vampire expert.

Our vampire expert.

"She is their vampire expert."

You don't need to be a vampire expert.

I was looking at Peter Westin, the vampire expert I'd met weeks before in Santa Barbara.

Maybe he thought I was some kind of a vampire expert, which was true in a way, but I was not overconfident.

Inaho appears to be a vampire expert and is obsessed with money.

He hadn't come here to be a vampire expert.

They needed a vampire expert with them on this one.