The much awaited fifth season of “Game of Thrones” has arrived at the Nichols Library.  When we last left Westeros, King Joffrey had been assassinated and his brother Tyrion, blamed for his murder has escaped, but not before killing his father Tywin, leaving the kingdom the unsteady hand of his sister Circe.   Meanwhile, Aya Stark has fled to Bravos, John Snow has defeated the Wildlings but faces a deadlier challenge,  and Daenerys is the unwelcome conqueror of Meereen.  From the Ice Wall to Slavers Bay, the game of power plays on relentlessly.