It is a massive plot contrivance. Did the Night King know the dragons were coming? The 3 spears being ready suggests that but was that their plan this entire time? How exactly is he supposed to know dragons are going to come and give him the opportunity to kill one and enslave it as a wight? In the books there is the Horn of Joramun/Winter which is rumored to be able to bring the wall down but this way seems awfully convenient and unexplained.
Sansa manages to get every guard and person in the Winterfell hall to play along with her surprise trial for Littlefinger without him knowing about it. When Littlefinger gets accused he doesn't even fight the accusations.
Jamie finally is on the path for long overdue character growth. Finally Cersei has crossed the line in his eyes. Cersei's plan with Euron is so strange, she really isn't understanding this whole 2 dragons> 20,000 men from the Gold Company thing. She is also definitely faking that pregnancy. Some people wonder what Tyrion said to make her pretend to agree to the truce and how that will come back on him what with him looking all concerned during the boat sex.
my memory is not that great but is it possible that arya could use little fingers face to get into kings landing to kill cersei or is he deemed an enemy to the Lannisters?