Envious Casca; Three Bedrooms, One Corpse; Double Dexter

Another Georgette Heyer book, this one a locked room mystery "Envious Casca". It was very entertaining, and I actually had the murderer figured out but then decided no, it couldn't be and changed my mind. Uncle Joe has invited all the family out to his older brother Nathaniel's estate, Lexham Manor, for the Christmas holiday. Nathaniel is a crochetedy old fellow who doesn't really care for any of his family, including his brother Joe. When he turns up dead, stabbed in the back, in his room that was locked on the inside, the question isn't really so much who did it, since everyone had a motive, but rather how they accomplished the feat. The only other locked room mystery I remember reading is a Sherlock Holmes story, "The Speckled Band". I'm sure there have been others, I just don't remember. It was very neatly done, I enjoyed it.
The third book in Charlaine Harris' Aurora Teagarden mysteries "Three Bedrooms, One Corpse" was sadly disappointing to me. I thought Harris had a great heroine going with Aurora: she was a spunky single librarian who loved to read about true crime. In the last book, Harris had Aurora inherit a large fortune, so Aurora quit her job and decided to see if she liked working in real estate, like her mother. Lame. Everyone knows librarians are much more fun than Realtors :) Anyway, while showing a house to a wealthy man, they find a corpse in one of the bedrooms and the hunt is on. And, much to my chagrin, Aurora falls for the older wealthy gentleman and they begin a passionate affair that ends with him proposing at the end of the book with an enormous diamond. Well, that's realistic.
Jeff Lindsay's latest Dexter story "Double Dexter", was great fun. It's just hard sometimes to separate the books from the show, and they're very different, so it was a bit jarring to read about Rita still being alive. But I'm glad she is, I like the Rita in the books better than the Rita on the show. So Dexter is out taking care of business one night when someone spies him at work. Dexter is determined to find out who saw him and take care of him before problems arise, but unfortunately his nemesis always seems to be one step ahead of him and is threatening to expose him, and he has the proof to do so. Dexter enlists his brother Brian's help, but Brian FUBARs the whole thing up and in the end Dexter takes care of it himself with some help from Astor.