The latest in Norton's well-known Witch World series, of which entries have been appearing variously--sometimes in YA form--since 1963. (Collaborator Crispin is the author of Yesterday's Son and V.) Competent, comely Joisan and her wretchedly weak, vacillating husband Kerovan wander purposelessly in the wastelands--while Kerovan fights a mysterious, mystic compulsion. Then, during a sojourn with the Amerindian-like Kioga tribe, Joisan earns the enmity of Nidu, the Kioga's evil shaman. But by now Kerovan has discovered his magical powers, yielding to the compulsion: with Joisan, he comes to an ancient, sorcery- preserved citadel--where he discovers that he is a reincarnation of the powerful wizard Landisl. And eventually there'll be a showdown between Nidu (who is plotting to release the evil Adept Maleron from a magical time-loop prison) and Kerovan--who must borrow the awesome Powers of Joisan's unborn child. Some fair ideas here and there, but overall a rather aimless performance that could use more teeth and muscle, less gauze and fluff: an about-average offering for Witch World fans.