Omega Games (Stardoc Series #8)

Dr. Cherijo Torin faces a different kind of epidemic—a mysterious black crystal spreading like cancer throughout the galaxy. The hunt for information leads Cherijo to the planet Trellus, whose inhabitants exhibit excessive paranoia and anger, taking out their frustrations in the Omega Dome in simulated combat against battle drones. But someone is killing victims outside the arena, and Cherijo believes the black crystal infection is responsible for this horror…