Engines of Light Books in Order

Outlaw programmer Matt Cairns accepts a job to penetrate a secret orbital station. On a distant world, exobiology student Gregor Cairns and his research partner pursue his family’s centuries-long effort to recover the knowledge of interstellar travel.

Gregor Cairns and his companions use rediscovered interstellar travel to reach a neighboring star system. Seeking the original cosmonauts, they want answers from the powerful intelligences responsible for transplanting humans and other species across the galaxy.

Nova Babylonia has deteriorated after the collapse of its regime and the failure of expected alien invaders to arrive. An outsider enters the corrupt city with uncertain intentions, joining other visitors whose presence unsettles its fragile order.