It shouldn't be that unexpected to hear from Lucifer from the actual terror that had slammed through their link, unable to be stifled.

Meet me in our room.

Immediately.

He does not care what Istredd is doing, he will bodily pull him out of a lesson if he must.

Lucifer had dropped out of the Horizon as soon as Dersti had her snack. He doesn't imagine Dean actually died in his domain and could have easily been back to continue to thrum with that constant burning, toying with Lucifer's weakness like a cat with a bit of string.

He waits, unsurprisingly pacing. He'd kept still and disinterested with Dean, it needed to spool out of him.