Complete filler episode, but I'll let that slide if it was a set up for more excitement. But pretty much an entire season in the dungeons for Margery to end like that

Anti-climatic doesn't even cover it!
Hope we get a fuller version of the Mad King flash back

Most exciting element of the whole episode and it lasted about a second and wasn't mentioned again.
Looks like the loose ends are being tied up too which is good... Benjen, Black Fish, Edmure.. hopefully others next week.