"Well, I believe I've discovered a new form of silence. Some philosophers postulate seven orders of silence, but I believe there's an eighth. If you allow me, I'd like to envelop you in the eighth form, to study the mental effects. What do you say?"
- That sounds a little too risky: "That's unfortunate. I'll have to use Talvas again, and he's a bit of a screamer. Although... maybe this could solve two problems..."
- I suppose so: "Excellent. If this works, I'll prepare a version that you can cast yourself, if you ever wish to inflict... er, study silence."
Allowing him to proceed will result in him casting a spell that temporarily blinds the Dragonborn, causing the screen to fade out. He realizes the error and comments that writhing tentacles have appeared where the eyes once were. Talvas Fathryon, shocked by the results, vomits.
Eventually, the spell wears off and sight is restored. Asking about some form of compensation ("I think you owe me"), Neloth replies: "I suppose I do. It's too bad it wore off so quickly though. Unfortunately you don't appear to be suffering from any side effects. Anyway, take this for your time."
Neloth: "Well, that's unexpected. I presume you are blind, given the state of your eyes."
Talvas: "Master Neloth! What have you done to him/her? What are those things growing out of his/her eyes?"
Neloth: "It's nothing that can't be fixed. The spell, that is. I... think I can fix the spell. It should only take a couple more years. But first, I need some data. Try... wiggling them. No, don't shake your fists! Wiggle the tentacle things where your eyes used to be."
Talvas: "I think I'm going to be sick." [vomits]
Neloth: "Hmm. From the way they are waving about, I'm assuming they aren't under your control. [Talvas vomits again] And I see now that your tongue is also... Well, it's probably best if I don't say. Uh, don't bother trying to scream though. It looks like it's beginning to wear off."
Talvas: "Is it over yet? Does he/she have eyes again?"
Neloth: "Hmm. Your eyes appear to be completely back to normal. Interesting."
- Whether or not the quest has been completed, Neloth may afterwards say in passing "It was fascinating to watch those tentacles grow out of your eyes."