Lore

What I caught from this episode was:
1. Cessair are clones taught to hate Neamhain, Fail miserably at stopping ONE milletian Be obedient, and Die horribly in terrific fashion survive.
2. Cessair's heart has a real name. Oh, and somehow survived having her brains shot out through the back of her head/choked to death by gas/slashed to pieces/etc.
3. Dian, the goddess of the messed up place the milletian just entered, cut out a very important piece of her brain and stuck it in a clone, who is apparently Cessair's heart.
4. She, par for the course for Cessair, failed to get all of it and left just enough of that piece to feel vengeance.
5. Treasure hunter's mother, Bith, sacrificed herself to make the Cessair cloning facility. His father, Birren, sacrificed himself to halt the curse on Treasure hunter. So both his parents are dead.
6. The aforementioned messed up place is made entirely out of magic, oh, and the blood of a ton of people. Dian's god powers are also made of blood. So not only are TH's parents dead, but the milletian just brutally murdered his last remaining relative.
7. Merlin might actually be relevant to the story, for once. He seems to be hunting for some thing that is apparently inside Tarlach. The same thing that Ruairi is trying to remove for some reason.
8. Merlin gets so stoned from opening magic doors that he thinks that Prof J and Starlet are actually relevant to the story.
You were supposed to catch onto the whole "TH's Cursed Settlers Lineage" thing the last couple of episodes, but I can't really blame anyone for skipping over it.
Feel free to correct me if I'm wrong, I skimmed over the story so I could brutally murder a goddess.