The Door Through Space: A Positronic Book (Hardcover) (ISBN-13: 9781515434108)

A science fantasy adventure set on an alien world where memory, identity, and allegiance intersect. In The Door Through Space, Marion Zimmer Bradley follows a protagonist drawn back into a conflict shaped by lost knowledge, shifting loyalties, and the complex relationships between cultures and environments.

Blending elements of planetary romance with psychological tension, Bradley constructs a narrative in which the past exerts a persistent influence over present action. The unfamiliar world is not merely a backdrop but an active force, shaping perception and decision-making as the story progresses. Encounters unfold through negotiation, confrontation, and gradual recognition, rather than simple opposition.

A representative work of mid-century science fantasy, the novel reflects Bradley's ability to combine immersive world-building with a focus on internal conflict. It remains of interest to readers of classic speculative fiction, particularly those drawn to character-driven narratives set within richly imagined environments.