Twins Storm and Lake were separated years ago by the foster care system. “Sync,” the latest young adult novel by prolific bestselling author Ellen Hopkins, follows the twins as they write to each other during the pivotal year before they reach legal adulthood. Storm winds up in juvenile detention when he takes justice into his own hands to avenge his girlfriend. And Lake runs away from her homophobic foster home with her girlfriend. Donna Edwards of The Associated Press says “Sync” is a stirring page-turner that sparks conversation on topical issues. “Sync” is released from Nancy Paulsen Books.