Anthony Hope 
Rupert of Hentzau 

Rudolf Rassendyll, having heroically saved the kingdom of Ruritania and nobly given up the hand of the beautiful Princess Flavia, has returned to his normal life in England. But when, three years later, Flavia, now the unhappily married Queen of Ruritania, sends him a love letter, it is stolen by the exiled villain Rupert Hentzau. Rudolf’s former adversary has been waiting for the chance to have his revenge, and this provides the perfect opportunity to stir up trouble.
Rudolf must return to the troubled kingdom to defeat Hentzau, where he is embroiled once more in a world of deception, intrigue, deadly swordfights and torn loyalties. With the stakes higher than ever, will he pay the ultimate price?