In the conclusion to the brilliant World Fantasy Award-winning series, Physiognomist First Class Cley's strange life dispatches him to the inconceivable ends of his world and strands him in the heart of a perilous wilderness known as the Beyond. One creature still lives in the Well-Built City--Misrix, Below's "demon son". Fighting his own loneliness, Misrix will follow Cley's every move and face a terrifying trial of his own.