Wheatley Dennis Wheatley 
Desperate Measures 

1814 – 18151814. The Irish Witch is dead, and Europe at peace. Roger Brook, now Lord Kildonan, is content to divide his time between his young wife, Mary, and his life-long mistress and spirit-companion, Georgina.But as the fashionable world glitters at the Congress of Vienna, the power-hungry Napoleon is about to plunge the continent into war once more. And Mary, possessed by demonic jealousy, is hatching a plot which threatens Roger’s fortune and Georgina’s life.Reluctantly, Roger Brook must assume his old identity as Europe’s most daring secret agent.