Secrets of the Night
Heroine: Rosamunde Overton.
Hero: Lord Brand Malloren.
It opens in Aug 1762 in North Yorkshire.
Book 4 of the main Malloren World series.
Follows on from: Something Wicked.
Followed by: Devilish.
Secrets of the Night was first published in Jul 1999 by Topaz .
It was reissued in Mar 2004 by Signet . [Both covers are shown below]
More info on the book is available here: Secrets of the Night