I really enjoyed Merrick. It's part of the Vampire Chronicles series and it focuses on the history between David Talbot and a witch named Merrick. The history is all background story of course in the fashion that Anne Rice often does in her books, but the main plot of the story is that Louis wants to contact Claudia's ghost and David gets in touch with the witch Merrick to request that she use her magic to do this. Personally I found the background story more interesting than the actual main plot. This book does involve the Mayfair witches so if you have any interest in reading the trilogy about the Mayfair witches, you should probably read them before you read this book.