His at Night (The London Trilogy)

Love is hottest in the darkness before dawn.
 
Elissande Edgerton is a desperate woman, a virtual prisoner in the home of her tyrannical uncle. Only through marriage can she claim the freedom she craves. But how to catch the perfect man?

Lord Vere is used to baiting irresistible traps. As a secret agent for the government, he’s tracked down some of the most devious criminals in London, all the while maintaining his cover as one of Society’s most harmless—and idiotic—bachelors. But nothing can prepare him for the scandal of being ensnared by Elissande.

Forced into a marriage of convenience, Elissande and Vere are each about to discover that they’re not the only one with a hidden agenda. With seduction their only weapon—and a dark secret from the past endangering both their lives—can they learn to trust each other even as they surrender to a passion that won’t be denied?