Black Hole Sun by David Macinnis Gill

Black Hole Sun by David Macinnis Gill is set in the future, well after Earth colonized Mars and ceased to exist. Durango is a Regulator (mercenary) who has been disgraced. His only follower now is Vienne, who suffered the same disgrace when they refused to commit suicide after their former leader was defeated. Durango is also accompanied by an Artificial Intelligence Implant who is able to scan the environment and keep Durango safe. Durango and Vienne are offered an opportunity to help a colony of miners escape the dreaded draeu, a cannibalistic group of insane beings who seem intent of discovering a mysterious "treasure" the miners have. Along with some other Regulator misfits, the two begin trying to make the miners safe. This turns out to be nearly impossible, however, when Durango learns some secrets about the miners, the draeu, and the queen that is leading them to attack.

This was an amazing book! It was full of action and adventure. It reminded me a little of the TV series Firefly that used to be on Fox. I would definitely recommend this book to more mature readers, however, because of the violence and content. This is one of the best science fiction novels I've ever read!