Although Jim Lewis didn't come up with Finn Lewis initially, it didn't mean that if Finn got into a fight with the people inside, Jim wouldn't come up. He was just standing by the door to ensure Finn wasn't in danger.
When Charles Mason opened the door, the dark muzzle of a gun was immediately pointed at his head. Finn had known that Jim would catch up, so he hadn't bothered to chase after them. Seeing Charles point a gun at his head and retreat back into the room, Finn shrugged and commented casually, "I'd advise you against running. They're not as gentle as I am. If they attack you, I don't think your arm, for example, will be of much use."
Charles raised his hands and replied with a bitter smile, "Mr. Lewis, since you came knocking, I assume you've already investigated my real identity. You should know, I mean no harm."
"I know you mean no harm, but you attacked me as soon as I walked in. You don't quite seem harmless…" Finn responded with a grin.
