Four dead queens
(Book)

"Keralie is the best pickpocket in all of the kingdoms of Quadara, but when she steals a "comm disk" and realizes a royal murder plot is afoot, she must learn who to trust and fast." --,(Source of summary not specified)

"Seventeen-year-old Keralie Corrington may seem harmless, but she's, in fact, one of Quadara's most skilled thieves and a liar. Varin, on the other hand, is an honest, upstanding citizen of Quadara's most enlightened region, Eonia. He runs afoul of Keralie when she steals a package from him, putting his life in danger. When Varin attempts to retrieve the package, he and Keralie both find themselves entangled in a conspiracy that leaves all four of Quadara's queens dead. With no other choices and on the run from Keralie's former employer, the two decide to join forces, endeavoring to discover who has killed the queens and save their own lives in the process. When their reluctant partnership blooms into a tenuous romance, they must overcome their own dark secrets in hopes of a future together that seemed impossible just days before. But first they have to stay alive and untangle the secrets behind the nation's four dead queens." --,(Source of summary not specified)