Is there a heaven? Joe says no; its all a bunch of hokum. His wife, Roberta, has always claimed to agree. But lately shes beginning to wonder, especially when they find themselves in church a lot, having reached the age when funerals are more frequent than weddings. Their granddaughter, Ellie, doesnt have time in her own busy life to ponder the afterlife. But when mortality confronts them, her grandmothers claim to have gone to heaven and back doesnt sound s