It's a pessimistic point of view, but...

[He thinks back to the beginning of last week.]

We've already lost something to this place. It's already gotten to us, whether we like it or not.

[He'd mentioned the possibility of this being a warning. They can take a week's worth of memories, take control of your senses to write and speak in nonsense...and then give it back. As if whatever this Shimmer is could do that at any time it pleased.]

I...wonder. [What Paige said...it got him thinking about what they'd seen in the town.] That place...