'I have gone to look for a lion.' In a world where lions have become extinct, the map-maker Jachin-Boaz nevertheless abandons his wife and son to find one, leaving just this note. But his decision has unexpected consequences. He will be pursued by his son, Boaz-Jachin, and by something else: a tawny-skinned, amber-eyed beast from another place and time, a bringer of life and death.