While somewhere deep down I feel like this book deserves less than a perfect 5 star rating, I can't in good conscience give it less. This series as a whole is just so, so good. It's an absolute standout in modern comics in terms of its mythology, character development, suspense, horror, creativity, artwork, everything. It's utterly fantastic. I believe I read each of the 6 volumes in about an hour each, flying through them to see what happened next. 
 This final volume, though, took quite a while to come out following volume 5, and follows pretty much immediately after it. The fact that it has been many months since I last entered the Locke & Key-iverse made it a little tough to jump right in. I had to take some time to look back and remember what characters were doing at the end of the last one (there isn't a "Previously On" page or anything to help out with that, which would have been nice), and even then my suspense level was probably down from where I left off in volume 5. 
 Also, while the action and sense of doom in this volume are constant, feeling like the final chapters of a fantastic novel, it all seems to wrap up a little too neatly at the end. The climax is big and surprising, and it's not like everything ends up perfect for everybody, but there is still one thing that happens at the very end that, to me, does not make a lot of sense and seems to be a deus ex machina that doesn't even have the deus ex. It's just a machina. 
 That said, readers of previous Locke & Key volumes (particularly those who are reading the entire series beginning to end at once, as I recommend) are going to love this volume anyway. Joe Hill and Gabriel Rodriguez have crafted a full, amazing world here, and I wish there was more of it to enjoy. I'm gonna miss the ole Keyhouse, faults and all.