Last night’s episode, “Oathkeeper”, now takes its place as the highest-rated episode of the series to date, with a tremendous 6.9 rating according to HBO, as reported by EW’s James Hibberd. The premiere and the third episode each tied for the previous highest mark, of 6.6 million viewers, so that’s approximately a 5% increase. Hibberd also adds that across three viewings, the episode reached the 8.4 million mark viewing it on the day.