The author of the acclaimed Pliocene Quartet offers an in-depth guide to a saga that “has most closely matched J. R. R Tolkien's achievement” (San Francisco

An informative guide to the five-volume "Saga of Pliocene Exile" includes a glossary, chronology, genealogies, name index, maps, diagrams, and more

In the year 2034, Theo Quderian, a French physicist, made an amusing but impractical discovery: the means to use a one-way, fixed-focus time warp that opened in

Second in the series that portrays “one of the best-thought-out futures ever encountered in science fiction” from the author of The Many-Colored Land (Joe H