I liked it, but wassn't that much interested in the story of Rhevenge en Ehlena. I wanted to read about Xhex en John. Luckily they where a major part from the book. 
 There where a few minor things that didn't add up. John says something like he wished he fed from Xhex so he could find her. But it works the other way around. They can find there own blood in anothers body. 
 And in Lover mine Xhex takes a shower after beying hurt by a lesser, and it says both black and red blood washed of her. But it should be blue shouldn't it! 
 Also, when Rehvenge cries he see's blurry red because red tears (of blood) comes out of he eyes. A little strange, since his blood his blue.