The old mansion stood silent against the dark stormy night. Detective Sarah Chen arrived just as the clock struck twelve. Rain pounded heavily on her windshield like a thousand drums. She stepped out into the cold and pulled her coat. The butler waited at the door with a grim pale face. Lord Blackwood was found dead in his private locked study. No one had entered or left the room since evening. The body lay sprawled across an antique mahogany desk chair. A single red rose rested beside his cold lifeless hand. Sarah knew immediately that this case would test her skills.