The reader is encouraged to use the information in the text and illustrations to help brothers Boz and JJ find out the secret of a mysterious old painting that they buy in the village of Dungeon Creek, a work of art that leads them to an old lighthouse, where they meet Katherine, who uses a wheelchair and looks like the woman in the painting, a reputed witch.Boz and JJ investigate an old painting that leads them to a lighthouse, where they meet Katherine, who looks like the woman in the painting, a witch