Dangerous Angels — Amanda Scott

A carriage accident leaves Miss Charlotte Tarrant clinging to the side of a cliff, holding on for dear life. In one terrifying instant, her safe, pampered world is gone.
Until Le Renardeau--the Fox cub--becomes her unlikely savior. Looking like the very devil himself, the notorious spy came to Cornwall to uncover a conspiracy to assassinate the Duke of Wellington.

But her timely rescue doesn't come without a price. After saving her life, her mysterious rescuer vanishes into the dawn, leaving Charlotte behind feeling a powerful sense of loss.

Until the fateful day she meets an enigmatic aristocrat named Sir Anthony Foxearth....