Cyril didn't seem to even notice Fenris until he spoke, and then his attention slowly pulled itself away from the Magister's dead form to focus on the elf. There was so much unusual about him, but also so much that hinted to Tevinter.

"Who are you? Who sent you?" The stranger might be claiming the idea that the slaves in this house are free now, but that could just as easily be a ploy to round up the slaves and murder them. That would be the sort of thing that another magister, one trying to eliminate the remainder of the Anguis household, would sent an assassin to do.