Jacob exited the pub with an impassive expression, 'I just kill a human for the first time and didn't feel a thing? Is it because of the book, or it's just my true nature thriving after I stop resisting it?'
Jacob thought a little about it and headed toward the bookstore. He won't provoke anyone and kill wantonly as long as the other party won't show any kind of hostility or killing intent.
Furthermore, this town was completely lawless. That was why Jacob directly go for the kill because he could easily discriminate Miller was eyeing his possessions from the start.
That was the reason he first started a conversation to probe about his backing and seeing him ignorant about the common customs, he directly labeled him as a target and provoke him.
But since Jacob didn't react in any manner or start a fight, he wanted to kill Jacob when he got the chance and reason, but he would've never thought Jacob's danger sense was not something a chubby like Miller could have.