Missing Persons
Once Corey and David had reported what they'd realized to the Professor and Uncle Scott, Corey was left with the fact that there he couldn't think of anything useful to do until the staff figured out a little more of what had happened to Cait and the others and where they could be found.

Announcing with agitation that Cait and the Gileses and others had been missing for day and to let people know felt only marginally helpful.

He sat in the hallway, thinking.
...Please let there be some answers before he called Mom and Dad.