School for Good and Evil, the, 5: A Crystal of Time

In this fifth instalment in Soman Chainani's bestselling fantasy series, The School for Good and Evil, Sophie, Agatha, and their friends must find a way to overthrow the sinister evil that twists lies into the truth and seeks to rewrite their story.
A traitor has seized Camelot's throne, sentencing Tedros, the true king, to death. Tedros's queen, Agatha, narrowly escapes, but their friend Sophie is trapped. She is forced to play a dangerous game as her wedding to the false king fast approaches, and all the while her friends' lives hang in the balance.
Now Agatha and the other students at the School for Good and Evil must find a way to restore Tedros to his rightful place on the throne and save Camelot - before all of their fairy tales come to a lethal end, and the future of the Endless Woods is rewritten forever...