I found this book years ago, in an out of the way bookstore in Norway, long before I'd ever heard of any of Anne Rice's vampire books. Her style of writing, her character and place descriptions, and the thrilling and surprising twists in the plot, had me turning pages and being drawn into this dark, steamy, imaginary world throughout my summer vacation that year. It also gives a brilliant historic description of New Orleans at that time.
I still value it as one of my favorite books. I started reading the vampire books, but found them completely different from that first encounter with the author - as if they were written by a different person.
This is a beautifully written mystery, love story, historical novel - it has just about everything.
If given a choice of 10 books to take with me on a desert island, "The Feast of All Saints" would be among the top five.