Jack's attention was brought back to the two in front of him when Gabriel began to answer Fauve's question. Though he had missed what that question actually was due to his shift in focus, he was more or less able to surmise what it had been from Gabriel's answer. From it, it seemed he was a specialist in enchantments and research; though Jack didn't visibly react to it, that did catch his attention. His former master had specialized in the same sort of thing, after all. Of course, this stranger didn't strike Jack as being anything like Jacques had been, but then again his master had always seemed to take on an alternate persona when he was dealing with customers, visitors, and other such individuals. Perhaps this man was the same.

Jack would have to kill him if he was.

Through his peripheral vision, Jack watched the other group depart the tavern one-by-one, leaving the two in front of him, the hooded woman- who got up and left shortly afterwards anyways- and the horsem- Jack paused eating as he realized that the stranger at the bar had already disappeared. The fact that such a large individual had managed to make his way out of the tavern without him noticing took Jack by surprise, though he decided to attribute it to his focus being drawn to those directly in front of him. Misdirection and sleight of hand worked on similar principles, after all.

In his surprise, he missed the proposal Fauve had made to Gabriel. 

It was around then that the hooded woman exited from the kitchen, knife coated with blood in her hand, and headed upstairs. At this point, Jack realized that the bartender had also disappeared- an indication to the source of the blood on the knife, perhaps. As Fauve commented on the situation, Jack nodded, still eating as he got up from his seat and followed her and Gabriel into the kitchen. As he had suspected, the bartender was on the floor, clothes stained red by the pool of his own blood that had been forming around him. Swallowing the bite of meat he had been chewing, Jack crosses his right arm over his chest, half-eaten venison still in hand, and gives a short bow in mock-respect. "And so ends the tale of the fat little barkeep," standing back up and turning to look at Gabriel as the sounds from upstairs cease, he adds "And it would seem someone else's story has ended as well. Any guesses who its hero might've been, merchant?"