The Black Moth may be my most disappointing Heyer read to date. It's all about a pair of brothers - one a gentleman and the other a highwayman. They both have romantic problems, and then there's the despicable brother-in-law making life pretty awful for all involved.
It sounds better than it reads. The characters are so boring, and the story goes on for far too long. I couldn't have cared less what happened to any of them. Only a 2 from me.