"They met under the least auspicious circumstances. He was a teenage volunteer at a nursing home on the Upper West Side of Manhattan. She was a wheelchair-bound resident in her nineties. He was poor, Hispanic, living in a rented room in the barrio, separated from his family. Her life, at least before arthritis hobbled her, was comfortable, and her daughters and grandchildren visited as often as they could. But when Margaret Oliver’s daughter hired Elvis Checo to look in on her mother a few afternoons each week, nobody realized that this would be the beginning of a beautiful friendship."