Game of Thrones_S06E04_Book of the Stranger_Still (20) Previous Next Published May 13, 2016 at 700 × 522 in ‘Game of Thrones’ Season 6 – New Stills From Episode 4, “Book of the Stranger” Diana Rigg as Olenna Tyrell and Ian Gelder as Kevan Lannister Credit: Helen Sloan/HBO