French by birth but enjoying life in 1813 as a widowed English countess, Lady Celine Wexham is in the unique position of being able to help those in need --- or to spy for the notorious Napoleon Bonaparte. Rees Phillips of the British Foreign Office is sent to pose as the countess's butler and discover where her true loyalties lie. But the longer he is in her fashionable townhouse, the more his staunch loyalty to the Crown begins to waver as he falls under Lady Wexham's spell.