What rolled in front of me on that television screen was a one-hour BBC documentary about Henrietta and the HeLa cells, called The Way of All Flesh, which I’d been trying to get a copy of for months. It opened to sweet music and a young black woman who wasn’t Henrietta, dancing in front of the camera. A British man began narrating, his voice melodramatic, like he was telling a ghost story that just might be true.