Garnett Baylee devoted his life to trying, and failing, to find artifacts of the early space age. In the wake of his death, one was discovered in his home, raising tantalizing questions: Had he succeeded after all? Why had he kept it a secret? And where is the rest of the Apollo cache?

Alex Benedict and Chase Kolpath discover that a missing renowned physicist had several interstellar yachts flown far outside the planetary system where they vanished. Following the physicist's trail into the unknown puts Benedict and Kolpath in danger.

"After being lost in space for eleven years, Gabe finally makes his triumphant return to reunite with Alex and Chase and retrieve a possibly alien artifact--which may lead them to solve the greatest archaeological mystery of their careers, in the eighth installment of the Alex Benedict series. After his return from space, Gabe is trying to find a new life for himself after being presumed dead--just as Alex and Chase are trying to relearn how to live...