Viss and his mate Brathwen are both Novices of the Absolute and can be encountered near the entrance of Grymforge, opposite to the berth at X: -608 Y: 404. They have been tasked with disposing of corpses of Deep Gnome slaves that died recently under the rockfall.
The party can speak to Viss, but the dialogue is actually carried on with Brathwen, while Viss only butts in several words here and there.
If not approaching Viss and Bratwhen at once upon arriving at the Grymforge, the Duergar proceed on kicking the corpses off the shore into the deep water and eventually leave only one of the bodies intact - the very same that has the Fetish of Callarduran Smoothhands on it.
Fetish of Callarduran Smoothhands on it.
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Melee: 1.5 m / 5 ft 