Lestat is being stalked by some shadowy guy who turns out to be Memnoch, the Devil, who spirits him away. From here on, the book might have been called Interview with the Devil (by a Vampire). It's a rousing story interrupted by a long debate with the devil. Memnoch isn't the devil as ordinarily conceived: he got the boot from God because he objected to God's heartless indifference to human misery. Memnoch takes Lestat to heaven, hell, and throughout history.
I admire Ms. Rice for her originality when it comes to God and the Devil and heaven and hell, but she has some serious flaws in her thinking. First, in the book, Memnoch is not really until well after Jesus' death according to Memnoch's story. In fact, Jesus wasn't really the Son of God, but God himself. So if God was on Earth for 33 years, who was in charge of heaven? It doesn't make sense. Oh yeah, and becoming Jesus was actually Memnoch's idea! Now, I'm not saying Christian scripture is perfect and all true. Sure, it has it's flaws, but we don't know what's true and what's not. But I also believe our scriptures are pretty close to the truth. And for Anne Rice to destroy everything we believe in is well, wrong.
I'm highly disappointed with this book, but it did one thing for me and that's made me think. I thought about it and realized how wrong she was about religion, God is NOT the bad guy and the Devil is NOT the good guy. Sure, he might be misunderstood, but that's it. Remember, we're loved by God, made in his image and all that stuff, so there goes Ms Rice's theory.
So Lestat was in this book, but he was a pathetic shadow of his Interview with the Vampire days. He seemed weak in this book and that's not the Lestat I loved. Please, Ms Rice, do us a favor and go back to the good old days of the vampires! We loved those books.