Wow, what a conclusion to a most satisfying series. I had to re-read the previous books to make sure I had all the details before starting the ending, and I had to wonder whether this would be a total let down, because the previous three books built everything up so, so well. Such dramatic tension, every character different but intertwined and fully formed. Everyone working together, loving each other despite the fights, despite the major differences in philosophies and life experiences. This book was more of the same, and threw in yet another surprise new character to the ensemble (in previous books, it was Mr. Gray!). He too was different from everyone else, but owned that he was the newcomer to this tight knit group searching for Glendower. 
 The atmosphere is ramped up in spades; descriptions of the nightmares, of the terrors they were fighting, were extraordinarily vivid and freaky just like you'd see in a horror movie. I'm not the type of person to guess endings, but I felt that this book let me have my cake and eat it too, where I got both the inevitable-tragic-ending and the happy ending! Somehow! And I was pleasantly surprised by how people I thought were side characters really weren't at all. 
 All the relationships presented here were justly earned. The entire story was so subtly crafted and can be enjoyed over and over. I'm looking forward to the next time I can re-read this series!