This is a classic science fiction novel by Marion Zimmer Bradley. This
work tells the story of the Terran Empire and their quest to maintain a
peaceful rule. However, on the planet Wolf something is afoot. They
enlist the services of Race Cargill of the Terran Secret Service, and he
goes undercover on Wolf to find the source of the problem. His mission
doesn't go as planned and he becomes involved in a blood feud, but this
leads him to the secret of THE DOOR THROUGH SPACE. This work is part of
our Vintage Sci-Fi Classics Series, a series in which we are
republishing some of the best stories in the genre by some of its most
acclaimed authors, such as Isaac Asimov, Harry Harrison, and Robert
Sheckley. Each publication is complete with a short introduction to the
history of science fiction.