The Devil in Love by Barbara Cartland

Travelling alone to France to take up her position as governess to the Duc de Valmont's grandson, beautiful young Larisa Stanton receives dire warnings about the child's father. 'Keep away from Comte Raoul de Valmonte', they say. For Monsieur le Diable, (the devil), is handsome, wickedly charming, and utterly irresistible to women. Sure enough, at Château Valmont Larisa finds herself in a seething cauldron of violent passions, wickedness, and murderous intent. Is it possible to fall in love with a man known as 'the devil', she asks herself? With Comte Raoul's life at stake, Larisa, and Monsieur le Diable are about to find out...