Stiles was getting better at lying to werewolves, but he still made the mistake of lying to begin with. Derek studied the teenager, scrutinizing him as if he would be able to see what was bothering him on his skin. "Perhaps I have been remiss in your training, but let me clarify one thing. If I ask you a question, I expect honesty. So, I am giving you one more chance to answer my questions honestly," he replied, his tone vaguely taunting, dangerous.