Voldemort thought it over for some time. Narcissa was correct to normally turn anyone away. But if they were asking for him directly, it was possible that they were new followers. Though, their urgency to seek an audience did cause him pause. Was this a ploy from Morgana? Was this a way for her to worm her way into his circle and break it from the inside. No, that’s not the case. She didn’t seem to be the one to infiltrate a side. She seemed the epitome of a Ravenclaw. Not a Slytherin. "Have them wait in the sitting room. I will see them shortly."