Rain poured on cobblestone streets. Shadows danced under flickering lampposts. Footsteps echoed in narrow alleys. A scream cut the night air. Detective Harris arrived on scene. A lifeless body lay sprawled. Nearby, a note was pinned. Crimson letters read: "Another one down." Harris felt the chill deepen. He surveyed the dark surroundings. Something sinister lurked within shadows. A clue glinted near corpse. Harris picked up the item. It was a silver locket. Inside, a photograph was hidden. Familiar faces stared back hauntingly. The hunt for clues began.