In this retelling of Romeo and Juliet set in 1920s Shanghai, These Violent Delights ($15, originally $20) is filled with flappers, mob rivalries, and a monster that lurks within the depths of the Huangpu river. When 18-year-old flapper Juliette Cai returns to resume her role as the rightful heir of the Scarlet Gang, the only thing that stands in her way is the White Flowers — along with the heir to the rival gang and her first love, Roma Montagov. But when both mobs are on the brink of instability, Juliette and Roma must put their guns — and grudges — aside to stop the mayhem and save the city they both hope to rule.