'Fabulous' JANICE HALLETT'Great fun...clever and wickedly funny' THE SUN'Deliciously funny' MARTINA COLEA headmistress is dead. The circumstances are suspicious.And as every parent knows, being on the school group chat can be murder...As educators go, Claudia Stitchwell makes Miss Hannigan look like Miss Honey.But when the reviled headteacher drops dead in the sc...