This is one of those shows where I'm so engaged that I'm surprised when the episode ends and the ED starts playing. Great stuff. Wonder how likely it is that Illya will cooperate with Gilgamesh attacking. Best case would be Shirou, Rin, Illya/Berserker, and Gilgamesh (fuck Shinji) joining forces to take down Caster. Doubt that would ever happen though. We'll see!
In the end that Caster followed the same method as the Master that she hated. And her only wish is to return to her own homeland yet what she's doing to his Master doesn't help her to grant her wish, which is dumb.