Bootleg Island — G.H. Teed

"The Britisher followed his words with a swift blow when New York's gang chieftain tried to take his girl. From his pocket the gangster fired, and that was the incident that brought Sexton Blake to the bootleggers' headquarters, Rum Row, the region of dark intrigue, perilous excitement. And there he met also, Mademoiselle Roxane." Sexton Blake meets Mademoiselle Roxane in Canada!