Masque by Gaslight — Virginia C. Deuvaul

When beautiful Kitty Temple, a vivacious American heiress, arrived at glamorous Imperial Paris of 1858, murder plagued the fantastic city of light. But the Comtesse Adele de Sens, Kitty's Godmother, explained that Paris was a city of extraordinary passions which she too would experience: Love and hate, jealousy and fear.

Fear, thought Kitty, would never overtake her -- until the demi-monde murders came strangely close. Neither Kitty's protector, the handsome, young Police-Inspector Giles Debray, nor Colin Venner, the brooding actor who was courting her, could alleviate her anxiety.

When Kitty's maid borrowed her hat for an outing and was mysteriously murdered, Kitty knew that the next time the murderer struck it would not be a case of mistaken identity…