Larkin Mullaney has written plenty of obituaries for the small-town newspaper where he works. But never before has he been assigned an obit like this one -- about the beloved local nun who died in a mysterious car wreck earlier this week.There are just a few nagging questions.Was it Larkin who was driving on the same stretch of dark highway when the church van swerved and careened off a precipice? Who were Larkin and his drinking companion David Diaz...