Genevieve Cogman

In the start of an original fantasy series, Genevieve Cogman, the author of the bestselling The Invisible Library, welcomes you to Graynes, a magical school for demon-summoning. This is St Trinian's meets the legend of Faust. Philomela once enjoyed the carefree life of a Cambridge Classics PhD - until her father's gambling debts forced her to trade prestigious academia for a job on the windswept Yorkshire Moors.
Graynes, an isolated all-girls school, offers a quiet - if terribly damp - lifeline. As the new Latin mistress, Phil expects nothing more taxing than dreary weather and making dead languages interesting. Instead, she finds unsettlingly eccentric staff, frankly terrifying schoolgirl pranks .