In Mercury Boys by Chandra Prasad, 16-year-old Saskia Brown discovers a unique gift: When she touches a vial of mercury and an old daguerreotype (a forerunner to the photograph), she can visit a boy from the past in her dreams. Saskia shares her secret with her classmates in hopes of making friends at her new school, but it doesn't take long for jealousy and secrets to threaten their fledgling secret society.