Velvet

Clad in black velvet and posing as a widowed French comtesse, Gabrielle de Beaucaire had returned to England for one purpose only - to ruin the man responsible for her young lover's death. But convincing the forbidding Nathaniel Praed, England's greatest spy master, that she would make the perfect agent for his secret service would not be easy. And even after Gabrielle had lured the devastatingly attractive lord to her bed, she would have to contend with his distrust - and with the unexpected hunger that his merest touch aroused.
From the moment he met her, Nathaniel Praed knew that the alluring Gabrielle de Beaucaire spelled trouble. But though he fought her outrageously bold advances, he could not stem the turbulent hunger that swept through him when the tall, titian-haired vixen pressed her lips to his. Now, against his better judgement, she is in his employ. And as Europe trembles at a tyrant's war and sinister minds plot against them, Nathaniel and Gabrielle fing themselves at the mercy of an exquisite passion and a love that could save - or destroy - both their lives.