Time Travelers Never Die

When physicist Michael Shelborne mysteriously vanishes, his son Shel discovers that he had constructed a time travel device. Fearing his father may be stranded in time—or worse—Shel enlists the aid of Dave Dryden, a linguist, to accompany him on the rescue mission.

Their journey through history takes them from the enlightenment of Renaissance Italy through the American Wild West to the civil-rights upheavals of the 20th century. Along the way, they encounter a diverse cast of historical greats, sometimes in unexpected situations. Yet the elder Shelborne remains elusive.

And then Shel violates his agreement with Dave not to visit the…