The results of a DNA test change a woman's life.Quilting expert Martha Rose (Knot What You Think, 2017, etc.) never knew her father. Her mother lived in a world of her own, so Martha was raised by her grandmother and Uncle Isaac, who moved the family from Iowa to California to escape the stigma of Martha's illegitimate birth. All she knows of her father is that he was a redheaded artist whose first or last name was Quinn. A DNA test her daughter Quincy has sent her reveals that Martha is half Ashkenazi Jewish on her mother's side, the father's side mostly Irish and English. Martha soon learns that she has a half sister on her father's side, Giselle Cole, who agrees to meet her. Although Giselle is wealthy, outspoken, snobbish, and younger and thinner than Martha, they hit it off, and Martha is soon inviting Giselle to Friday night dinners with Uncle Isaac and her fiance, ATF agent Yossi Levy. While Giselle is learning about Martha's Jewish heritage, Martha finds out that their father, Jacob Quinn Maguire, was a famous artist who married Giselle's mother, left one day for a gallery opening in New York, and was never seen again. As they explore their shared background, the sisters discover that Quinn was quite a womanizer who may have fathered other children. Using her police connections to get information, Martha finds that the investigation into their father's disappearance was dropped quickly. She and Giselle suspect that his death was probably covered up, perhaps by Giselle's wealthy and powerful grandfather. Traveling the country in Giselle's family's private jet, they dig up plenty of information they hope will tell them whodunit and why.A mystery combined with wry humor. Copyright Kirkus Reviews, used with permission.