In World's End (1984), a former Hegemony lawman and would-be lover of Moon Dawntreader, BZ Gundhalinu, journeys to a frontier-style planet to search for his lost brothers. While there, he uncovers a ruined city which may hold the key to interstellar travel by a means other than a gateway — and a future in which Tiamat no longer need to depend on Hegemony technology.

The Summer Queen (1991) continues the adventures of Moon Dawntreader and Sparks Dawntreader. Moon becomes the Summer Queen with Sparks as her consort. All is not smooth, however; the Summer People resist Moon's attempts at reform, and the Winter People plot to kill her. Even Sparks reverts to his previous vices learned while he was Arienrhod's lover. BZ Gundhalinu turns up also with news of his technological find. Moon ultimately through self-sacrifice and personal bravery resolves all problems — for now.