"Anyone is a threat given the right opportunity. You don't strike me as harmless," it was obvious by how much distance was put between them just how Marcus felt about the Doctor. Last time they'd spoken, he'd said things he couldn't of known or understood. That lead him to believe this man was either a conman or had some kind of supernatural gift. Perhaps he was a seer or mind reader? He didn't know. Though either of those could be just as handy to him as a doctor.

"What do you know of the drums?" Marcus asked bluntly, not moving any closer, just watching the Doctor unblinkingly, not even moving to engage him any better. He just wanted answers before he decided on what to do. If he got the wrongs ones, he was going to think of a fittingly slow and painful death for this man. If he got the right ones? Maybe just a slow and painful punishment. "No more double talk or strange words, Doctor. I'm warning you now, I have little patience today."