The body lay sprawled across the mahogany desk, still bleeding. Detective Sarah Chen entered the study at precisely midnight today. Rain hammered against the windows of the Victorian mansion relentlessly. The victim was Marcus Blackwood, renowned art collector and philanthropist. His silk tie had been pulled tight around his throat. A brandy snifter lay shattered on the Persian rug below. The study door had been locked from the inside somehow. Sarah noticed three wine glasses arranged on the side table. Only one glass bore the dark stain of lipstick marks. The wall safe hung open, its contents apparently undisturbed completely. Marcus's appointment calendar showed three visitors scheduled for tonight's gathering. His sister Victoria, his business partner James, and someone unnamed. Sarah's flashlight beam caught something gleaming beneath the leather chair. A diamond earring, expensive and distinctive, glittered in the light. Thunder crashed as Sarah bagged the evidence with gloved hands. This would be a long night of questioning and investigation.