When Julie’s magic spirals into destruction, Miss Hardbroom forces Mildred to face grim reality – her old friend Indigo turned into a stone statue after similarly losing control. Mildred saves Julie from the same fate by using a rare magical lichen, and rescues all the vanished people from Julie’s model. Julie forsakes magic and leaves Cackles, while Mildred is on her last chance – and now the keeper of Miss Hardbroom’s darkest secret.