The espionage continues in New York City with the second book in this original heist series! Still smarting after their last run-in with the Rivals, the Jewels focus on their upcoming trip to the Big Apple. But the girls can't stop thinking about the cryptic letter they found, describing not one, but four precious gems that now need their protection! Even more confusing, the Jewels start receiving anonymous notes, one of which claims the Rivals will...