Forbidden Ancient House

My brother disappeared mysteriously in a century-old house, leaving only half a bloody note. Everyone in the town said: It is a curse, and whoever goes in will never come out alive. I don't believe it. On the first night I stayed in the ancient house, I heard footsteps in the corridor, doors opening and closing automatically, and black shadows passing by the window - all supernatural phenomena, I took three minutes to uncover them. The caretaker of the ancient house appears to be honest and honest, but secretly kills me again and again. The detective in the town seemed to be paddling, but in his pocket was a file on a cold case from five years ago. As the investigation deepened, I discovered that what was hidden in this ancient house was not a ghost, but four serial murder cases, the truth about the family extermination that had been sealed for thirty years, and a murderer who was extremely forbearing. He thought he could keep the secret forever. But he doesn't know that my brain is his biggest flaw. ——The heroine with an online IQ x the shady and forbearing detective, join forces to break the situation, and the whole process is high-energy without any peeing.