Billion Worlds Books in Order

An ancient AI helps its human companion Zee search for a mythical weapon after a rescue entangles them with criminals. Across the inhabited Solar System, Daslakh must protect Zee while keeping the weapon’s civilization-threatening secret from everyone else.

Scavenger Solana Sina boards a deserted space colony with an unusual crew, hoping to salvage valuables before it is sent away. Pirates, a secretive stranger and the mystery of the colony’s destruction turn the job into a fight to escape.

Zee visits his girlfriend Adya’s wealthy family on Miranda and discovers a conspiracy threatening her father. While Adya investigates, Zee and his AI companion pursue a lost treasure through political rivalries, mercenaries and dangerous family interference.

Spy Sabbath Okada travels to a vast Venusian city to investigate an undercover agent’s suspicious death. Accompanied by an AI determined to act as his conscience, he encounters rival spies, brutal police and a former love with dangerous loyalties.