It was always so tedious, waiting for his guests to wake up from being knocked out, but certain concession had to be made to keep people (or demons) from calling for help. The look on Ruby's face, however, had been rewarding for Alastair to make the wait slightly less tiresome, and everything was going perfectly according to plan, which was even more of a plus for his mood. He had proven the ritual he had created would indeed bind a supernatural force to the body it was in and he had Ruby's knife now for his later plans.
For now, though, his attention was on Ruby and the things he planned to learn from her. As she started to rouse, Alastair gave the strap binding her chest a sharp yank – a time saving measure, mostly, in putting her on the table while still unconscious, but better for the initial waking shock, he felt – and held up the knife in his other hand, so it caught the light. He had been "fond", in as much a way as he was capable of caring about anything, of the knife in its short stay in his possession, so having it back pleased him more than having Ruby here.
"This knife is still an exquisite piece," he said, lowered it to her side, the blade resting against her skin. "I told you that the last time I caught you, in our own world." He sighed, the sound loud in the large room as it echoed. "You don't remember that, but I'm in a good mood after getting another copy of this knife, so let's make some new memories, shall we?"