The mansion loomed dark against the stormy night sky. Detective Sarah Greene stepped out of her car, raincoat dripping. A butler greeted her at the door with grim expression. "The body's in the study, ma'am," he said softly. Sarah followed him through dimly lit, opulent hallways silently. The study door creaked open, revealing a gruesome scene. Lord Blackwood lay sprawled across his antique mahogany desk. Blood pooled around him, staining priceless papers and books. Sarah's keen eyes scanned the room for immediate clues. A shattered whiskey glass lay near the victim's hand. The window was ajar, curtains billowing in the wind. On the desk, a crumpled note caught her attention. She reached for it, careful not to disturb anything. As she read, her brow furrowed with growing concern. This case, she realized, would be far from simple.