TMDb/A Knight of the Seven Kin TV A Knight of the Seven Kingdoms finale hits series high with 9.5M US viewers. The HBO prequel averages 14M US & 26M global viewers. March 16, 2026 AceShowbiz - A Knight of the Seven Kingdoms achieved its highest viewership numbers with the season finale that aired on February 22, according to HBO. The episode attracted 9.5 million viewers in the United States within its first three days of release, marking the largest audience for the series so far.