September 2019. Cristina Rivera Garza travels from her home in Texas to Mexico City, in search of an old, unresolved criminal file. “My name is Cristina Rivera Garza,” she wrote in her request to the attorney general, “and I am writing to you as a relative of Liliana Rivera Garza, who was murdered on July 16, 1990.” It’s been twenty-nine years. Twenty-nine years, three months, and two days since Liliana was murdered by an abusive ex-boyfriend—and Cristina knows there is only a slim chance of rec...