Nexus 2: Sins of the Past - Sontem Trilogy, #2

Captain Drew Anderson and the crew of the Nexus embraced their decision to cut themselves off from the homeworld and parent company, Sontem. But their former coworkers have other ideas, and now Sontem's other ship, the Argus, is coming for the Nexus. Learning to be a democracy has its growing pains, and the crew is still struggling to work together. But the Argus' chase threatens their new life, and the worlds they've encountered along their way.
The Nexus' crew can capitulate...or face the annihilation of millions. Nexus 2 is the second book in The Sontem Trilogy.