"[Claudia’s] artwork was invariably disturbing. She had once drawn a picture of a woman killing two small children, and she’d burned it after seeing my horrified reaction. One of the notebooks had a rough study of that scene, along with a postcard of the painting that inspired it. On the back of the card was printed MEDEA, 1838, EUGÈNE DELACROIX, MUSÉE DES BEAUX-ARTS DE LILLE. I knew the Greek myth, and I finally understood the lone word my sister had written on her sketch: Revenge."