"The Death Cure (Maze Runner, Book Three)" by James Dashner
https://www.amazon.com/gp/product/0385738781

Book number three of a six book young adult science fiction apocalyptic
series. I read the well printed and well bound trade paperback
published by Delacorte Press in 2013. I have purchased the next two
books in the series from Big River and will read them soon, both are
prequels to the first book in the series. The sixth book in the series
was just released.
https://www.amazon.com/Maze-Cutter-James-Dashner/dp/B09YJBP6X5/

I saw the excellent movies made using the first three books in the
series a couple of years ago and decided to read the books finally. The
third movie is somewhat faithful to the third book with Dylan O'Brien
(Teen Wolf) playing the part of Thomas.
https://en.wikipedia.org/wiki/Maze_Runner:_The_Death_Cure

The basic premise is that the Sun goes wild and scorches the Earth in an
event called the Flare, outright killing most of the people on Earth.
And then a manmade virus rolls through the remaining population, killing
many of them and making most of the survivors crazy. A group of kids
wake up in a glade surrounded by a huge maze full of dangerous creatures
and learn how to survive in very difficult situations. The kids make
their way out of the maze and into the control room for the maze. A
group of scientists takes them to a safe place and then sends them
across the blistering desert. At the so-called safe place, the kids
find out that there was another maze and another group of kids.

The survivors of the kids end up in Denver which is trying to keep the
city free of diseased people. The diseased people are kept outside the
city in a big camp. But, eventually the city is overrun by the diseased
people.

Warning: Several of the kids are killed in the book and the movie.

The author has a website at:
https://jamesdashner.com/

My rating: 4.4 out of 5 stars
Amazon rating: 4.5 out of 5 stars (7,607 reviews)

Lynn