Three bland archaeology graduate students, one of whom envisions himself as a knight, are sent back to 14th-century France to rescue their professor. The novel mentions a multiverse model of time-travel, but gives no explication (nor does it enter the plotline); the most interesting characters and developments appear for a few pages and are never again heard of (at least not in this universe).
I don’t mean time travel at all. Time travel is impossible. Everyone knows that.

Variants

(1)
  1. Timeline by Michael Crichton (1999).
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Michael Crichton

Derived Works

(1)
  1. Timeline by Jeff Maguire and George Nolfi, directed by Richard Donner (19 November 2003).