And, to round things off nicely...
Barely fifteen minutes after the communication with Luna ends, the Angels receive another telepathic, magical message. This time it is a sending to Six, and it comes from Adal, since the warforged clearly recognizes the clipped tone (and the spell identifies the sender).
Problem here. Found trusted psion to interrogate guard. Before interrogation began, guard dropped dead. Part of brain and spine exploded. Was psionic attack. Self inflicted.
OOC: Being a sending, you can send back a 25 word answer.