User blog comment:Stuckbeingrachel/The Betrayer/@comment-4816103-20130328203253

These are all really good points.

I'm also thinking it could be Harriet. Reasons-

We haven't seen her since she was taken back to the Gatehouse, and Victor and Denby were clearly planning to do SOMETHING bad.

Just because Eddie's vision only showed Sibuna, it doesn't mean that Frobisher literally just meant Sibuna. It could just mean someone on their side, and Harriet is.

They were talking about loyalties, which is one thing they have been discussing before about Harriet.

She's about the same size as the mystery sinner.

Considering she pushed KT into the room in the first place, she might have been able to find the hole, and then the room.

But she does have bangs, so...hmm...