Octavia Gone (Alex Benedict, Bk. 8)

After being lost in space for eleven years, Gabe has returned, and is trying to find a new life for himself after being presumed dead—just as Alex and Chase are relearning how to live and work with him. But when a seemingly alien artifact goes missing from Gabe’s old collection, a mystery is uncovered concerning its origins and it grants everyone an opportunity to dive into solving it as a team, once again.

When a lead on the artifact is tied to a dead pilot’s sole unrecorded trip, another clue leads to one of the greatest mysteries of the age: the infamous disappearance of a team of scientists aboard a space station orbiting a black hole—the Amelia Earhart of their time. With any luck, Alex, Chase, and Gabe may be on the trail of the greatest archaeological discovery of their careers.