He was about to speak when Jack spoke. "Arthur, why don't we go and talk somewhere private?"
Arthur's nerves tensed up as he stared at Jack. Although Jack was having a smile on his face, Arthur knew that this wasn't because Jack was happy. In fact, he could feel the intense killing intense that was coming from Jack.
And although it wasn't full, it was directed at him. So, although he wasn't a fighter and neither had he been to the battlefield, he knew that the situation was turning for the worse.
Arthur's fear for Jack wasn't developed because Jack was dangerous or something. No, it was developed from the fact that even Johnathan didn't like messing around with Jack.
Someone like this was one that Arthur would never want to deal with. And if he had to do that, he would always ask for his father's help and the situation would be dealt with.