The Cralmac feature prominently in Patricia B. Cirone's Victory's Cost from Towers of Darkover.
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The Catmen also featured prominently in several of the short stories, including David Heydt's I'm a Big Cat Now from Towers of Darkover; Linda Frankel and Paula Crunk's Blood Hunt from The Other Side of the Mirror; and Judith Sampson's To Serve Kihar from Domains of Darkover.
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The Trailmen feature prominently in the novels, The Planet Savers and Star of Danger, and in Diana L. Paxson's short story, The Place Between, from Snows of Darkover.
Thendara is also the name of the main city on the planet Darkover in the famous series of science fiction novels by Marion Zimmer Bradley.
Marion Zimmer Bradley (1930–1999) wrote under various pen names, eventually becoming quite popular for her Avalon and Darkover series.