He was arrested seven years ago, when a Forsworn raid he was involved in went bad.
When talking to him, the Dragonborn has a chance to persuade Duach or brawl him for the skooma, which they can give to Grisvar in exchange for a shiv or to Borkul the Beast so he will let the Dragonborn pass. Another way to get the skooma is to pickpocket it from Duach.
- How long have you been here? "Year seven, I think? Surprised I haven't cut my own throat out by now, but something keeps me going."
- What are you in for? "I'm a Forsworn. One of our raids went bad, and I got captured. Would've been fine dying for the Reach with my kinsmen, but the Silver-Bloods want their ore mined, so they threw me in here."
- "Whenever I get out of here, I'm going to go kill a Nord."
- "Other prisoners get suspicious when we talk to each other, so keep it down."
- "Come on, move it. We have Nords to kill."