I was fascinated by Libby Copeland’s account of what happens when you swab your cheek or spit in a vial and send it for DNA testing. Many who participate are interested in their ancestral heritage. Some are looking to see if they have a genetic risk. And then there are other ramifications - a whole new family. Using investigative techniques and following one woman’s experience, Copeland provides an exploration of the science, genealogy and mystery that DNA testing provides.