The moon cast an eerie glow over the quiet street. Detective Johnson stepped out of his car, surveying the scene. The old mansion loomed before him, its windows dark and empty. He adjusted his hat, took a deep breath, and approached. The front door creaked open, revealing a dimly lit foyer. Johnson's eyes narrowed as he noticed the trail of blood. He followed the crimson drops, leading him to the parlor. There, lying motionless on the floor, was the victim's body. The detective knelt down, examining the corpse with trained precision. He frowned, realizing that this was no ordinary murder case.