All OCC discussion moving forward can go here since we're starting a new chapter of the game.

I figured the PCs would want to discuss the latest findings in light of their previous investigations and also what implications it may have on them and possible courses of action.

If you need a reminder on what they know or a brief rundown of what just happened over the last couple of days in-game, just let me know.

A brief rundown probably wouldn't hurt.
Also, just to check, as far as Zelpuz knows, the most likely explanation is that the Order captured Lasrane, maybe they had a call out at the hospitals to notify them if someone looking like that appeared. That way they would know about the meeting, right? Otherwise, i.e. without talking to Lasrane and/or scanning him, there is no way to know about it.

Yes, very much that's the logic. The only way they could logically know about the place and meeting time would have been to either capture Lasrane or somehow get the note you left on him.