Hackett, in his trusty ship the Perseus, is not just a space traveller—beginning his travels with an expedition to Neptune and back—but, thanks to the time-dilation effect, a time traveller as well. His new mission will take him to Andromeda, to get a close-up look at the constellation which will eventually crash into the Milky Way, and give humanity a heads-up about the challenges which are coming. A mission which will take him five million years to complete. Not only is Hackett exploring unknown space, but he will return to a vastly different time.

In the final throes of the generations-long war with the alien Felen, smuggler Jereth Keeven's junk freighter breaks down in a strange rift in deep space, with little chance of rescue—until they encounter a science vessel that claims to be from 152 years in the future. Engineer Uma Ozakka has always been fascinated with the past, especially the desperate peace mission that ended the war with the Felen and ushered in a new age of collaboration—a mission Keeven's first mate, Leesongronski, is supposed to be leading right now. 

When linguist and smuggler Sean Wren is blackmailed into a job to get some data off an ancient ship, he's not expecting it to be the Philosopher's Stone: a literal recipe for immortality. Unfortunately, he's not the only one looking. The undying Ministers, mysterious aliens that have ruled over humanity for thousands of years, want the data too. So does the Republic, the last free human government. To add to the fun, the map to the treasure is in a long-lost language, the ship's filled with dangerous traps and genetically engineered monsters.

Seventy-five years from today, the human race has been cast from a dying Earth to wander the stars in a vast fleet of arks - each shaped by its inhabitants into a diverse and fascinating new environment. When her sister disappears while responding to a mysterious alien distress call, Eryn insists on being part of the crew sent to look for her. What she discovers on Candidate-623 is both terrifying and deadly. When the threat follows her back to the fleet and people start dying, she is tasked with seeking out a legendary recluse who may just hold the key to humanity’s survival.

It's 200,000 years in the future. Humanity is extinct, the ruins of its cities fossilised beneath sediments deposited by rising oceans. After a civilisation of intelligent bears collapsed when a plague turned them into crazed killers, their former slaves, descendants of raccoons who call themselves the people and worship Mother Earth, have driven the last of the former masters northward and built a new civilisation.