Fate/Zero Episode 17
This is definitely an episode where the story moves forward into the "next phase" of the narrative. Possibly the final phase, given how there are only 8 episodes left. I think it was well made, and there are certain specific parts I'll get into later on in the spoiler zone, but I also felt that this was the first episode in a while which felt artificially stretched. Scenes take longer than they could have, and there are lingering shots in scenes as well as other techniques used to drag the runtime of a smaller number of events into a full episode. The first half of the episode felt well paced, but the second half dragged in a rather obvious way. But even that might be intentionally, something I'll discuss in the spoiler zone.
It was definitely intentional. I mean, the tension in that last scene was so thick you could cut it with a knife.