The first season that I haven't been at least, say, 90 per cent confident about what was coming next at each turn, which I think was due to a combination of the books being less fresh in my mind and the tv series departing more from the books in any case. And, as a result, more immersive and involving, with the deaths of sympathetic characters continuing to hit home, plenty of others also meeting their ends along the way, and the remainder continuing to go deeper and deeper in their manipulations and turns.