I caught up after a few weeks of being behind. Maeve facing down an army with a samurai sword is EVERYTHING (Shame they skimped out on the battle afterwards but oh well).
The Ghost Walkers
It was obvious that they were saving people when we saw them trying to take Sizemore from Maeve and when they tried to capture William's daughter but I didn't see that they were trying to protect Maeve's daughter all along at all. It was a lovely twist. The whole episode was just brilliant, some people might consider it filler and it kind of is but it's exceptionally well done filler.
That being said, if Maeve dies I'm out tbh.