Four rather clumsy assassins stalk the seminaries of Detroit. So far only luck stopped them from killing a priest. But time is running short, and murder lies within their vicious grasp. Who's behind this quarter of killers? An angry seminarian? A fanatical leader of an arch-conservative Catholic society? Another priest? Keen-witted Father Koesler, clerical sleuth extraordinaire, had better find the answer soon. Because he's next on the killers' list.