A Gentleman's Honor by Stephanie Laurens

Alicia and her sister, Adriana, have made a desperate bid to save their family. After their parents died, they were left with their three brothers. So they're using the last of their fortune for Alicia, masquerading as a widow, to bring her sister out into society. Hopefully Adriana's good looks will allow her to marry well (and  hopefully for love) and support the rest of them. 

Too bad Mr. Ruskin has attached himself to Alicia. And especially bad that, after a somewhat public argument, Alicia is found over his dead body.

Luckily, Tony Blake, Viscount Torrington, is the first to find her. He can immediately tell that she is not the killer in this situation. He is also immediately intrigued by Alicia. So now she has to balance the fact that she is falling in love with this man with the fact that she is supposed to be a widow in the know about how live (and physical love) work. Oh, and there's the tiny matter that someone seems to be working behind the scenes to make society believe that Alicia is a murderer.

Not my favorite in this series but not a bad book at all. 

Three and a half stars

This book came out in 2003

Follows The Lady Chosen

Followed by A Lady of His Own

Borrowed as audiobook from Hoopla

Opinions are my own