Top positive review
You'll want to make sure to have read the prior 3 books, so good...
Reviewed in the United States on May 20, 2019
I read book one "Blockout" a little bit ago and got sidetracked. So, I' have just read this book 2 "All Dark" and oh the ending..... You need book 3 "Darkest Days" to be right there so you can continue, and get to it and you must have book 4 "Dark Hope" to get your through the need for more of this story line. The main character Wes sure has interesting things going on around him, and for someone so smart he get bemused by the ladies of all ages that are around him. And then the dogs in the story, I really need one like Raider. He's special.
You just get caught up in the people of the story and then what happens, not what you'll expect. My advice is just read the series. It's that good. I read the books straight though and you'll want to do that also.