This book annoyed me.
The first book in the series was deeply, deeply unsatisfying but had the germ of a story that could be good. Lovecraftian weirdness mixed with conspiracy theories and some noirish government agents, good enough to get me to drop six bucks on the sequel even if the story itself was more like blocks of text barely connected by narrative. Unfortunately, this second book is even worse about the language. To be clear, I really hate the language in this book. It's pretentious, and circular, and deliberately obtuse. There's an early scene in Dublin that seems to exist ONLY so the author can name drop Joyce (this isn't like other genre fiction, I've read ULYSSES!) and that should have been enough warning for me that there was going to be a lot of run-on sentences and very strange jargon. There's a lot of flashing back and forth into the future and past but not a lot of clarity as to why, so naturally we have dense, DENSE, future slang to contend with, for no discernible reason. It's... it's just not well done. Playing around with language can work (see House of Leaves) but not here, not like this.
The story (and I use that loosely) involves an incursion into our reality from Beyond. They take an island in Maine, and various shadowy groups are trying to stop it. A game of chess is implied? It is played between twins? There are echoes of this chess game across time? We win, somehow? The Signalman, a character from the first book, shows up for a chapter or two, to hint at just HOW FAR WE'LL GO to fight off Cthulu, (I assume this means we'll nuke a tentacle monster, but who knows) but I honestly can't tell you whether we even did it or not. SPOILER the twins aren't twins, they're actually one person and that... does something, I don't freaking know.
Really, the things done to language in this book are the worst. There's a chunk written in French that isn't translated. The first few sentences I dug back to my high school French to figure out, because I'm game, but then i realized it was like a whole chapter, and I did not love this book enough to try to parse that shit out, sorry. Skipped over all of it, hope it wasn't important. At one point we're in the future in an Unethical Journalist, who is livestreaming a suicide and somehow sees one of the twins and has lots of sex with her, but maybe just in his m mind. He forgets to keep his eyes on the suicide, getting him in trouble with his bosses. The future doesn't have cameras, only camera-eyes, I guess. This is not important and will not advance the plot. One of the twins is on an island where she has been addicted to heroin, randomly, and is shooting blobs as they come out of the ocean with a Super Genius girl who reads a lot and may kill her later. This is not important and will not be dealt with in any way. There's a Wandering Jew, except she's referred to mostly as the Egyptian. She works for one of the shadowy agencies trying to flip spies from another shadowy agency. She plays chess with her boss, and wins. This is not important and will not advance the plot. At some point in the future, a man will be living on a boat and playing chess and obsessing over stories of the twins and chess, but guess what? This is not important and will not advance the plot.
Seriously, just avoid this one. Go read early Laundry Files, or 14, or Lovecraft Country, or Broken Room. This isn't worth your time.