Children of the Black GlassHowls Moving Castle meets Christopher Paolini in this dark and flinty (Booklist) middle grade fantasy, set in a world as mesmerizing as it is menacing, following children on a quest to save their father who get embroiled in the sinister agendas of rival sorcerers. In an unkind alternate past, somewhere between the Stone Age and a Metal Age, Tell and his sister Wren live in a small mountain village that makes its living off black glass mines and runs