A thick fog cloaked the cobblestone street, muffling the distant church bells. Shadows danced beneath the gas lamps, concealing a furtive figure. A woman’s scream ripped through the silence, shattering the night. Startled, a stray cat bolted from the alley, its eyes wide. The scream died away, leaving an eerie stillness in its wake. Inspector Holmes arrived moments later, his brow furrowed in consternation. The mansion loomed ahead, its windows dark and forbidding. A uniformed constable stood guard, nervously twisting his helmet in his hands. "What's the situation?" Holmes inquired, his voice calm yet authoritative. The constable swallowed hard, his Adam's apple bobbing noticeably. "It's Lady Evelyn Grant, sir. Found lifeless in the library." Holmes nodded, his eyes scanning the scene with a practiced intensity. "Show me the way," he commanded, his mind already racing with possibilities.