"Oh I'm quite sure it'll be adequate to your needs, you'll be investigating Deverin properties and business associates. Minvandu will no doubt insist on a close reading and will nitpick at whatever he can, he likes to show off his legal minutiae. It's tedious." Lord Deverin reaches out to accept the letter from Tilos, briefly peruses it and nods as though satisfied and holds it out to you.
As you take hold of it he doesn't release the paper until you look up. "Master Raleigh, I hesitate to bring up such a thing, it's been a settled matter for years now, but there is one lead your group may wish to consider. For many years I had, well, something of a 'nemesis' in the wizard Orizir, an employee of those snakes at the Bronze House. Some twelve years ago I able to prove that he was the ringleader of a slaving-circle and daemon-worshiping cult, and he was arrested and sent to the Hells. I received word six years ago from city officials that he was confirmed dead, and certainly the attack Tilos described doesn't sound quite like what a mage of some skill could achieve. But...perhaps an apprentice? Or a member of the daemon cult who escaped arrest? It's truly the only thing I can think of pertaining to suspects."