First off, can I just say that I adored the Vampire Chronicles up until Blackwood Farm came out. Even the smaller, minor-character-focused books were good in their own way. I loved Interview with the Vampire, The Vampire Lestat, even Memnoch the Devil... But not this one.
Why?
* The plot. While there is some semblance of a plot in this novel, it's not really good enough to warrant a novel being written about it. Lestat is back, he has new vampire minions (who happen to be huge brats, and not in the way that Lestat was once called a brat by Marius), and the Mayfair family have brought their Taltos problems into the Vampire Chronicles. So what?
* The characters. Quinn was bearable. I read Blackwood Farm and didn't hate it completely, even though the Mayfairs were a part of it. And I even thought Mona was okay in the Mayfair series. But in this...Quinn and Mona turn into spoilt children. Mona becomes a shrieking, crying, spoilt brat, and Quinn will do anything she says. Not only that, but Lestat is virtually unrecognisable. He's turned to religion (much like Anne Rice herself) and wants to be a saint. He wants to be good. This is not Lestat. I loved Lestat as a character because of the arrogance, the good at being bad, the underneath-it-all I'm a good guy kind of thing, you know? Lestat wasn't perfect. He was a vampire, but we learnt to love him and sympathise with him. Now he wants to be human again. He wants to be a saint.
* The closure. I ask here: what closure? This is not closure. Not only does it make a mockery of all the previous vampire chronicles, but it makes a mockery of the Mayfair Trilogy as well. Tying two of your beloved series together to make a quick ending for them both is not a good idea. I was willing to give it the benefit of the doubt and bought the book anyway. I was wrong. It's not closure even in the smallest sense of the word. Where are the rest of the vampires we've come to love? Louis, Armand, Marius, Pandora, Maharet, David... What happened to Louis and David after the events of Blackwood Farm? Did Armand and Marius remain friends after the events at the end of The Vampire Armand? Do Marius and Pandora remain together after Blood & Gold? What happened to Thorne and Maharet and Mekare? None of these questions are answered. Not a single one. Not only that, but I personally thought that the Mayfair Trilogy worked well as it was, and didn't need loose ends tying up. We didn't need to know the whole tragic ending of the Taltos that got away. We didn't need to know that Rowan was tired and disillusioned and unhappy with her life (and love). It had a sort of happy ending in Taltos, and now we are left with a tragic one (in every sense of the word).
So, if you were to ask me whether I would recommend the book or not, I would have to say "NO!" Read Blackwood Farm if you really must, but just leave Blood Canticle alone. It doesn't have a plot, the characters are butchered, it DID need some serious editing (despite what Ms Rice says to the contrary, every author should have an editor - constructive cricitism helps even the most genius authors), and it did not offer closure.
End of story.