Orion Rising ($22.95; Jul. 30; 256 pp.; 0-312-20351-9): Owen Keane, who left the seminary for the mean streets (The Ordained, 1997, etc.), is pulled into the murder of his classmate James Murray, and even deeper into the past he shares with Murray: the dead man’s rape and beating of Boston nurse Francine Knaff 26 years ago, now finally confirmed by posthumous DNA evidence that convinces everybody but Owen.