
Whereas "To Kill a Robot" worked fantastically in blazing its own trail and creating a wild yet continuous narrative, "Sanctuary" works incredibly differently - in knowing the predictability of its reveal, it instead exerts all of its effort on all of the beats of the episode. The destination, for the most part, is obvious: the road that we take to get there, graciously, is not.
The plot is simple - Rhett reveals that there is, in fact, a third roommate, a mysterious figure named Glenn that keeps to himself. Link, however, decides to break the lack of communication and meet the fellow, but when the pair stumble into his room, Link finds... a few warning signs. While Rhett, acting naively in the face of Link's concern, suspects nothing of the jars full of insects, the well in the middle of the room - "Maybe he's filling in a well," - or a cryptic ransom note on someone (or, as it turns out, something) named Timmy, Link pieces together that they're sharing rent with a murderer. Obviously, we can presume that Glenn isn't actually a serial killer, but at the same time, I don't think anyone could easily reach the conclusion that he was a turtle-whispering clown, and that's where the episode gets to be the most fun.