Based on

Movies like The Trail of the Cigarette (1920)

When Jessica Dale, a companion to wealthy Hortense Bates, is found dead and her valuable earrings missing at a masked ball being held at the Bates's home, the only clue is that of a crushed cigarette found beside her. Because the brand of cigarette matches that found in a similar crime being pursued by Tex, the famous criminologist is called in to investigate.