This month the Science Fiction & Fantasy Book Club journeys through the Grim Darkness of the 41st Millenium with Adrian Tchaikovsky's novel Day of Ascension. 

From the publisher:

"The people of forge world Morod have found a new hope against despair and toil. The long-awaited angels are close, and the cult must prepare for their coming.

Listen to it because: acclaimed science-fiction author Adrian Tchaikovsky's first full-length work for Black Library takes the form of Day of Ascension, in which the populace of the forge world of Morod grow weary of the backbreaking work and injustice of their lives. But how far will they go to achieve change?

The story: on the forge world of Morod, the machines never stop and the work never ends. The population toils in the mines and factoria to protect humanity from the monsters in the void, while the Adeptus Mechanicus enjoy lives of palatial comfort.

Genetor Gammat Triskellian seeks to end this stagnant corruption. When he learns of a twisted congregation operating within the shadows, one that believes that the tech-priests are keeping people from their true salvation - a long-prophesied union with angels - he sees in them an opportunity to bring down Morod's masters and reclaim the world in the name of progress.

But sometimes, the only hope for real change lies in the coming of monsters."