[!]

a folded letter bearing no seal is left on the desk by the entry - 'To the agents of the Glass eye'

if unfolded, it reads: [!]

Greetings from a colder quarter, though my interest lies where the stone turned and a trail vanished.
Long have I heard of your work, and I hope your reputation was not exaggerated.
A matter has drawn my attention; one which may be as profitable as it is obscure.
Suspicion lingers over a ruin that does not feel accidental. I have inklings, not answers.

Should you be willing to trade truths, seek me:

REQFMB NC UEB OENBMFX GMS BPUFMNY

Noon.