Secrets of the Blue Hand Girls

When the first letter appears in Kay Anderson''s locker, it carries one instruction: dye your hand blue.

She definitely shouldn''t follow it. Kay doesn''t have time for secret societies: as a scholarship student at up-and-coming Manhattan prep school Davison High, she knows her job is to work hard, get into Northwestern, and ignore her wealthy classmates'' fun-filled Instagram stories. Besides, her...