The Judas Murders — Ken Oder

On a cold February morning in 1967, Sheriff Coleman Grundy finds Betty Lou Mundy dead in her front yard and her husband on the porch with the gun that killed her. It looks like a classic case of revenge on a cheating wife.Until the next murder. And the next. As Cole desperately searches for leads, he's forced to come to grips with his own wife's unsolved murder three years earlier, and in the process, he unearths long-buried secrets that change his life forever.