If you do a Google search of this book, Blank is listed by some sites as the third book in the Verus Foundation Trilogy. Goodreads does not mention this connection and having read the book, I can understand why. First, this book was written three years (2015) before book two in the Verus series. Second, none of the human characters of books one and two are in this book. Third, it isn't until you get about half way through the book that there is any mention of aliens and events from the first two books.
Reviewing this book as the third in the Verus Foundation Trilogy, I would give it three stars. However, if you look at it as an individual book, without trying to tie it to the other two, it rates four stars. It does a terrible job continuing the story line but it is a very interesting book on its own and it absolutely does not require you to read the "first" two books.
Blank is an apocalyptic story that begins shortly after much of the world is wiped out by the sudden melting of the southern ice cap and, nearly simultaneously, a solar eruption that wipes out most world's electronic satellites and energy grid. Even worse, the radiation wave blanks the minds of the majority of the survivors leaving them as "blanks", with no memories or socialization skills. The story seems to drop us off in the middle of things. First we meet Max, a woman who is in the middle of a dangerous and clandestine political mission. We then meet Captain Stone Luckman (the main protagonist) as he is the middle of a rescue mission. Needless to say, the tension and excitement of this story begins immediately and continues throughout.
In general I enjoyed the story line and the characters. The story takes place in Australia or what is left of it after the dual catastrophes. As Matt Eaton lives and works in Brisbane, the book contains quite a bit of actual Australian geography, language, and culture.
The first two books in this "trilogy" were built nearly exclusively around male characters. That made sense as they were based on three, male, Apollo astronauts along with powerful political and business MEN of the 1960s. Blank again has a lot of male characters which seems appropriate as they are all Australian military. Fortunately Eaton does introduce, from the first page, a few strong and capable female protagonists.
Another issue is that a large part of the book takes place with some main characters, and in the culture of Australian, blackfellas. Blackfellas are indigenous Australians and, while I am glad Eaton makes this very important ethnic group central to the story, I am always a little nervous when authors (usually white authors) write ethnic dialog that is not from their own ethnicity. I have little background with indigenous Australian culture so I cannot judge how accurate Eaton's portrayal is but the characters are interesting and important to the story line.
Overall I recommend this book, particularly if you read it as a "stand alone" and not as the end of the Verus Foundation series.