All of these episode 7 spoilers! My goodness what secrets lie in the opening of episode 2? I think @MagusVerborum is well aware of my thought process at this point 
The following is all theories but I’ve spoiler tagged it anyway since it contains ep 3/4 stuff, and just in case I am right 
Since the bamboozle that was the end of ep3, I’ve started to think there might be one person masquerading as two on the island, thus the red that there are no more than 18 people. After a couple of very late night sessions of re-watching episode 1 and 2’s footage, I’ve noticed that at no point Shannon and Kanon are ever together in the same room as Battler, which led me to believe that they are the same person. Having edited the beginning of episode 2, these two chapters are soaked in evidence. Shannon “fighting against the side of herself” that supports the witch, the identical marks on their hands, the fact that only they can talk with the witch, and my favourite “Shannon felt somehow she had to do it for her own sake”. We cover all of this in more detail later in the playthrough, but if this is correct and you’re marking EPISODE 7 SPOILERS, I’m feeling pretty chuffed right now
I’m in the middle of editing part 3 right now, so maybe all of this confidence will be suddenly shattered as I do so, who knows. I’m sure looking forward to it!