She glanced at his eyes, and it also seemed that she was looking elsewhere and looking worried. "If the murderer is just a servant, then it indicated that he must bear a deep grudge against William for many years. As far as I am concerned, the Lake family barely hires new people. Those servants have been working here for more than three years. But the murderer decided to take action now, which means that he has lived in hatred for a long time and must keep finding the chance to kill William. People would have different logical thinking when they tried to commit a crime. From the incident of William, I can tell that the murderer is hot-headed now since he poisoned two people twice in such a short time, though he had borne the grudge for many years. He is eager to achieve his goal and wants to take revenge as soon as possible. He is usually sober, but his psychological thinking is fragile and radical."