With such novels as The Resurrectionists, Michael Collins has galvanized his reputation as a master of the literary thriller. In Lost Souls, he embarks upon his most ambitious project yet, offering a harrowing portrait of a stricken American community. On Halloween night, a small midwestern town is traumatized by what appears to be a hit- and-run accident. But the mayor and chief of police conspire to divert the investigation away from the prime suspect,...