Ace, New York, 1987, 1^st pr. thus.  ISBN 0-441-66238-2.  MMPB, 198 pages.  Some edge and cover wear, small creases and reading creases; binding tight with a slight roll.  Interior clean and unmarked with tanned pages.  “The planet Chthon was Hell itself … a prison world of ruby caves where rebels and outlaws were exiled into endless darkness.  Aton’s crime was loving a minionette, one of the sensuous woman warriors it was death to touch.  His son Arlo was both minion and human.  Arlo’s destiny was war, with the deadliest enemy of all: the very planet Chthon, which was alive, and angry at the life within its depths…” (from rear wrap)