I’m aware of the name Marion Zimmer Bradley because, if you read science fiction and fantasy at all, that name comes up quite a bit. That said, to the best of my knowledge, I don’t believe I’ve read any of her works, including her arguably best known novel The Mists of Avalon. Although rumors of her being a perpetrator of child sexual abuse in one manner or another have come into my awareness over the past year or two, I never paid much attention to them.
Then I found an interview published at Life Site News with Bradley’s daughter Moira Greyland titled INTERVIEW: Daughter of famed sci-fi author explains mother’s gay pedophile worldview published last May 2018, which discussed Greyland’s book The Last Closet: The Dark Side of Avalon.
This is the book’s description at Amazon: