Grounded after a rescue attempt in Earth orbit goes bad, Commander Martin Atkins of the Confederation Navy is approached by the Interscission Project, a consortium of civilian corporations on the verge of perfecting the technology to travel to another star. He joins the crew of the Zenith, humanity's first starship. Edward Harlen is a brilliant young engineer, and a key player in the construction of the Zenith to take advantage of the untested technology of foldspace drive. But Edward has his own agenda in joining the project....

The disastrous events of the Zenith mission behind them, Marty and Edward lead very different lives at either end of time. Martin has been tapped to lead an elite military operation designed to curtail and ultimately eliminate the threat of time travelers. But Henry Bradford has other ideas and seeks to entice him into taking up the role of captain of the rechristened starship Azimuth. Almost a quarter century in the future, Edward lives a life of wealth and influence as the adopted son of Starfire's CEO, Trevor Sutton.

Life settles into a routine for the inhabitants of Chiron Colony, humanity's first interstellar settlement, after the threat of the time traveler Gifford has apparently been eliminated. But the Hourglass and its leader, Admiral O'Dare, are not content to rest on their laurels, convinced that time travel remains a palpable threat to human civilization. When Annette Sutton uncover a possible secret plot to eliminate the principal members of the Interscission Project decades in the past, when they had only just met, the colonists' idyllic peace is shattered.

Death comes for us all. But sometimes it comes early, because it's sent. Everything seems to be going great in Christopher's world. Newly married and promoted, he's even hammered out the dents in his relationship with his brother Marley. Then a death in the family shakes the foundations of his world. When the word comes down that it was murder, then only the best forensic investigator of the Chiron Defense Force will do to assist the Travellers in finding the culprit. And that happens to be Marley.

Jacob Atkins was 18 years old when he lost his best friend, Mark. Since then, he's tried to move on with his life, building a career in the Hourglass Corps. Then an unexpected convergence of events threatens to expose the Hourglass, and destroy everything they have tried to accomplish. Martin Atkins thought he was perfectly happy as a relatively unremarkable Captain in the Confederation Marines, until a terse message landed in his inbox from a man he thought was the love of his life.