Mostly he knows what he has! Just. Not with everything. Stuff he hasn't looked at in a while tends to make its way out of sight and out of mind. It happens.

Lemm dips a horn in response to their enthusiasm, trying not to look too pleased that they apparently feel that way. (Lemm will not change into an overly-forthcoming fountain of zeal overnight, and likely not ever. Exactly how thrilled he is about anything will remain something he keeps to himself for the most part.)

The spirit stuff is considered at length. He's a bit torn - on the one hand, does he really want to know? He was admittedly more comfortable not giving the concept of ghosts and spirits much thought. Still, curiosity has driven his whole life.

"...Hrmm... Tell me if it's important. I'll leave that up to you." If he really thinks about the odds, he's probably walked through a few in the past. He must certainly have taken things rather left alone. Lemm makes a displeased noise and shakes his head. "I've always had a heap of questions for the dead, but I don't know that I like the idea of them answering back."

It's not that he's afraid, per se. It's just... something that puts a strange new spin on his whole line of work.

"Worry not. I'll be silent as the grave."