[And not for the first time, he feels that deep anger at this place for messing with Keith in particular. No one deserves this. Least of all Keith.]
Keith... [He squeezes his hand a little, wanting to comfort, to offer him that grounding.] I'm here.
[It's going to be okay. Whatever he wants to do, he'll do. In the meantime, though, he's watching Keith's dad somewhat warily, perhaps with less suspicion now that it's clear he isn't about to physically attack.]
Even if it's something from the magic here... it's your dad. Say whatever you want. Or nothing at all. We can find our way out of here.