Lord John and the hand of devils

A young diplomat who had begged for Lord John's help is killed before he can explain his need. Witnessing the murder, Grey vows to avenge the young man, as the trail leads to the notorious Hellfire Club and the dark caves beneath Medmenham Abbey. In Lord John and the Succubus, Grey's assignment as liaison to a Hanoverian regiment in Germany finds him caught between two threats: the advancing French and Austrian army, and the menace of a mysterious 'night-hag,' who spreads fear and death among the troops.