The best thing about the Lady Grey books are the characters. There's no wishy washy women here, and the men all have interesting character flaws that make you like them all the more.
Lady Julia is actually a bit annoying at times, and her dislike of dogs made me want to hit her a few times while reading Silence In The Sanctuary, but it didn't stop me from loving the book.
Deanna is definitely a must try author. Oh and there's no real romance in these books either.