When his oldest friend turns up at his door, blood-spattered and wanted for murder, Tres Navarre is pulled into a case that reaches back nearly two decades. Ralph Arguello, a one-time criminal who left the street life behind when he married San Antonio police detective Ana DeLeon, stands accused after Ana, working a cold case, is shot, with the investigation pointing toward an old, unsolved killing on Mission Road. The police believe Ana was about to name her own husband in the eighteen-year-old murder of Franklin White, the son of a local crime boss, and that Ralph attacked her to derail the inquiry. Convinced he is being framed, Ralph persuades Tres to help him, and the two go on the run, dodging a citywide manhunt while trying to expose the real killer. Riordan cuts between the present-day chase and San Antonio in the mid-1980s, when the original crime tore through the city's underworld, gradually revealing the histories of the people caught up in it, including Ana's mother, one of the city's first female officers. The sixth Tres Navarre novel tightens the focus on the series' core relationships and the racial and class fault lines of San Antonio, delivering a propulsive mystery rooted in friendship, loyalty, and long-buried truth.