Wool

My latest book is Wool by Hugh Howey. It's the first book in a science fiction series and the kindle version is free.

The story of Wool takes place on a post-apocalyptic Earth. Humanity clings to survival in the Silos, subterranean cities extending over one hundred stories beneath the surface .... Wool initially follows the story of Holston, Silo-18's sheriff. Holston spends the novel processing and investigating the circumstances surrounding his wife's death. - Wikipedia

The book became very popular and is apparently slated to be a Ridley Scott movie sometime soon. Here's a bit from a WSJ story on the book ...

Sci-Fi's Underground Hit

Hugh Howey's postapocalyptic thriller "Wool" has sold more than half a million copies and generated more than 5,260 Amazon reviews. Mr. Howey has raked in more than a million dollars in royalties and sold the film rights to "Alien" producer Ridley Scott.

And Simon & Schuster hasn't even released the book yet.

In a highly unusual deal, Simon & Schuster acquired print publication rights to "Wool" while allowing Mr. Howey to keep the e-book rights himself. Mr. Howey self-published "Wool" as a serial novel in 2011, and took a rare stand by refusing to sell the digital rights. Last year, he turned down multiple seven-figure offers from publishers before reaching a mid-six-figure, print-only deal with Simon & Schuster

[...]

The novel takes place in a postapocalyptic future where a few thousand remaining humans live in a giant, 144-story underground silo. Couples who want to have a child have to enter a lottery; tickets are distributed only when someone dies. Citizens who break the law are sent outside to choke to death on the toxic air. Those who are sent to their deaths are forced to clean the grime off the digital sensors that transmit grainy images of the ruined landscape to a screen inside the silo. The images are meant to remind residents that the world beyond the silo is deadly, but some begin to suspect their leaders are lying to them about what's outside and how the world came to ruin ......

I've only just started the book, but it seems good so far. Here's a book trailer ...