That'll Teach HerA headmistress is dead. The circumstances are suspicious. And as every parent knows, being on the school group chat can be murder 'Deliciously funny' MARTINA COLE 'Pure fun in book form, a laugh out loud murder mystery with great characters and a page turning plot. It's a book you won't be able to put down!' C L MILLER 'Brilliantly witty and suspenseful a delightful blend of humour and mystery that kept me guessing until the end' JOANNA WALLACE As