Back at Deepdean for a new term, Daisy Wells and Hazel Wong are met with unsettling changes—a harsh new Head Girl, a group of bullying Prefects, and strange, secret-filled notes appearing around the school.
Then, on Bonfire Night, the Head Girl is found murdered.
With plenty of suspects, buried scandals, and their own friendship under strain, Daisy and Hazel face one of their most challenging cases yet. Can they uncover the truth before everything falls apart? (Book 4)