The Ptorrigan Lode — Kathryn Lance

In the asteroid belt everyone can hear you scream...but nobody cares.

From EditorsAndAuthors.com:
Somewhere in the asteroid belt, at an outpost called Onstation, The Corporation controls all. Its female employees are required to drape themselves in the modest Muslim garment, the chador. And two brothers--Jay, a musician, and Von, The Corporation's OnStation Director--are rivals for the love of one woman.
This is the premise for The Ptorrigan Lode, a worthy successor to Kathryn Lance's 1980s cult classic Pandora's Genes. Jay, the musician, is addicted to chappa, a drug, associated with a now-extinct civilization, that increases creativity--among other things. Like most addictive substances, chappa eventually destroys those with a dependence on it.
Jay will die without his chappa fix, but The Corporation has made chappa illegal. Von offers him a way to get all the chappa he might ever need, and get his life back in the process, but there's a catch. More than one.
The Ptorrigan Lode keeps you at the edge of your seat and keeps you guessing all the while. It's a quick read, but a satisfying one, that will nevertheless leave you hungry for more. In that case, I can recommend Lance's Pandora's books, which are eerily relevant to much going on in our culture today.