Human Nature/Family of Blood are my favorite episodes ever (of the New Series, which is all I've watched so far). And people say this book is the best Doctor Who novel of them all. So I had to read it, and it was interesting to see the similarities/differences with the episode. The book is quite a bit more sophisticated than the others I've read. It's written for adults, not all ages like the BBC hardcovers. But I didn't love it.