Detective Thompson stepped out of his car into the foggy night. He squinted at the dimly lit mansion before him. A chilling breeze sent shivers down his spine. The party was in full swing, unaware of the grim discovery inside. He sighed, bracing himself for the investigation ahead. The door creaked open, revealing a grand foyer splattered with blood. A chandelier sparkled eerily, casting grotesque shadows on the walls. A woman's lifeless body lay sprawled on the marble floor. A single golden earring glistened beside her, its mate nowhere to be found. Thompson frowned, noticing a cryptic note clutched in her hand. His mind raced, piecing together the sinister puzzle unfolding before his eyes.