Skyrim:Sinding

Sinding, a Nord warrior, is a werewolf who was jailed for killing Lavinia, Mathies' and Indara Caerellia's daughter in Falkreath. Speaking to him in the Falkreath Barracks begins the Daedric quest Ill Met By Moonlight. 

When seen in the jail cell, Sinding wears nothing more than a pair of ragged trousers.

If you choose to talk to him about the murder, eventually he will freely admit that he is a werewolf and mention that he sought to control the condition through means of a magical ring. Unfortunately, the ring is cursed by Hircine and causes Sinding to go berserk without warning. He'll ask you to take the ring. If you agree, he will hand over the ring before he transforms and escapes from the jail. He mentions seeking a sanctuary where he won't be able to harm another. Near the end of the quest, you are given the option to either slay Sinding like Hircine asks, or spare his life.

Should he survive, Sinding can sometimes be found outside of the grotto in werewolf form. He has been seen skulking around outside of the Honningbrew Meadery coming from Riverwood, and follows the trail west until he gets back to Bloated Man's Grotto. He also may travel east from Bloated Man's Grotto past Whiterun, through Riverwood, south to the gate of Helgen, and then west to Falkreath, walking through the Falkreath Barracks and entering the jail. Everyone is oblivious to the fact that there's a werewolf wandering around, though animals do attack him (wolves do not appear to be allied with him, as they are with you when you are in werewolf form). The reverse may also happen. He may instead be found in his cell at the Falkreath jail in werewolf form (possibly human form as well) and will travel to Bloated Man's Grotto, where he will wander back and forth from the campfire to the small pond with the waterfall nearby. The people around him don't seem to react to him, though. He will, however, turn hostile to any enemies who engage in combat with you, or that you attack. Sinding's hostility is not affected by you being in human or werewolf form.
 
Related Quests
 

Quest-Related Events
The Cursed Ring
thumb|Sinding in werewolf form
Speaking to Mathies about who killed his daughter will reveal that Sinding used to work as a laborer: "Sinding. Came through as a laborer. Seemed like a decent man." He understandably has a deep hatred of Sinding, as he'll continue with: ''"He's stewing in the pit while we figure out what to do with him, if you've got the stomach to look at him. What could drive a man to do something like this?"'' He'll also choke up when telling you how Lavinia died: "She was... he ripped her apart. Like a sabre cat tears a deer. We barely found enough of her to bury." Upon ending conversation with him he'll also say, ''"I just don't understand what kind of a man does that."

Sinding will greet you by sadly remarking, "Come to gawk at the monster?"'' If you tell him that you heard he attacked a little girl, he'll answer, ''"Believe me, it wasn't anything I ever intended to do. I just... lost control. I tried to tell them, but none of them believe me. It's all on account of this blasted ring." Asking him instead about why he is imprisoned here will have him reply, "A little girl is dead because of me."'' and continue as if you told him about the attack. Either way, you can ask him about the ring, and he'll tell you, ''"This is the Ring of Hircine. I was told it could let me control my transformations. Perhaps it used to. But I'll never know. Hircine didn't care for my taking it, and threw a curse on it. I put it on... and the changes just came to me. I could never guess when. It would be at the worst times. Like... with the little girl." Further asking him what kind of transformation will be replied with: "I don't suppose there's a point in keeping the secret if I'm going to die in here anyway. I'm sure you've heard of men who shift to beasts under the influence of the moons."'' He'll continue by confessing, ''"I am one of them. A werewolf. It's my secret, and my shame. That's why I wanted the ring... it was said to give men like me control. Now I may look like a man, but I still feel the animal inside of me, as strong as ever." You can further press him for more information:

:;"Why did this make you attack the girl?"
:"I had just come into Falkreath. They needed some help working the mill, and I thought that would be something safe. Something I could do. When I saw the little girl, I was just... I could feel it coming on. I could taste the... I needed to hunt. But this pitiful, limited body wasn't meant for hunting. Slow. No claws. Weak, mashing teeth for chewing cud. I held in my rage as long as I could. But it boiled inside of me. She looked so fragile. Helpless prey. And then... ... I feel terrible about what happened. About what I did. It would probably be best for everyone if I just went away."
:;"Who is Hircine?"
:"Do you not know the Daedric Lord of the Hunt? He revels in the chase, and also gave the 'gift' of lycanthropy to mortals. A powerful force, not to be crossed. As I learned too late."
:;"What will you do now?"
:"I've been looking for a way to appease Hircine. There is a certain beast in these lands. Large, majestic. It's said that Hircine will commune with whoever slays it. I tracked it into these woods, but then had my... accident with the child. I want to beg his forgiveness. Give him back the ring. But while I'm stuck in here, the beast wanders free."''

Lastly, you can offer to take the ring to Hircine. He'll be surprised: ''"Oh my. You would do this for me? Here, take it. I don't want anything to do with this wretched thing anymore."'' He'll continue by telling you what to do: "Seek out the beast. He wanders these woods. Bring him down and... well, the Lord of the Hunt should smile on you. I wish you luck, but should leave here while I still have my skin." He'll end with: "Should our paths cross again, I will remember your kindness. Farewell." He'll then transform into a werewolf and escape through the top of his cell.

 

The Will of Hircine
thumb|left|Sinding at the grotto
After you've hunted the White Stag and caused an aspect of Hircine to appear, Hircine will order you to hunt down Sinding, who is currently hiding in Bloated Man's Grotto, and rip the skin from his body. Hircine will also tell you to hurry, as there are other hunters in the grotto competing for his favor. If you refuse, saying that he's done you no wrong so you won't kill him, he'll answer that he does not want vengeance: "There is no retribution in the hunt. It is not vengeance I seek, but the blood course of a living hunt." Either way you will have to go to Bloated Man's Grotto to either kill or save Sinding.

Upon arriving at the cave, you will find a gravely injured hunter, J'Kier. He'll tell you that his group of hunters was killed by fighting Sinding. He'll then die from his injuries. Go further into the cave and you'll find Sinding. Tell him that you've been told to kill him will have him say, ''"And I would deserve it, wouldn't I? I can't stop you if that's what you want to do. Hircine is too powerful."'' However, he'll continue, ''"But if you spare me, I can be a powerful ally to you. And I would promise to never return to civilized life. I know now that I can't live among people." You can now choose to either kill or spare him.

thumb|"Now let's deal with these other hunters."''
To save Sinding, say that you will spare his life. He'll be grateful: ''"Thank the gods. Now let's deal with these other hunters. We hunt together!"'' A new group of hunters will appear and attack you two. Take care of them and go deeper into the grotto, helping Sinding clear the place of hunters. Once they are no more, mention to Sinding that the last of the hunters is dead, and he'll thank you again: "Thank you for your help. I will make my home here, away from anyone I might hurt." He'll stay in werewolf form, wandering around Skyrim. If you meet him again, he may tell you, ''"Never thought I'd see you again."''

On the other hand, if you wish to kill Sinding, tell him, "I cannot defy Hircine. You have to die." He'll accept your choice, saying, "So be it." before he runs towards the cave entrance. Several hunters will be waiting for him, but they are outmatched, and by the time you arrive at the scene many of them will have been killed by Sinding. Kill him and activate his corpse to tear the skin as Hircine told you earlier. Hircine will appear as an apparition of Sinding as a human to congratulate you, saying, ''"You've done well, hunter."'' Tell him that you did as he asked, and he'll reply, ''"And found my favor. That skin will serve you well, child. Look more closely at it. My glories shall protect you from all this world's grievances."'' He'll end with "Good hunting." and disappear, leaving you with the artifact Savior's Hide.

Notes
Sinding, as a werewolf, cannot be raised with the Dead Thrall spell, but can with The Ritual Stone power. 
Taking the ring from Sinding makes it auto-equip and it cannot be removed for the duration of the quest (the ring can sometimes be unequipped by your own werewolf transformation, whether deliberate or caused by the cursed ring).

Bugs
 
 
 
Dispatch the hunter to allow the quest to complete and allowing Sinding to complete his script.
 
Reloading a save from before entering the jail may fix this.
Alternatively, you can use the console command   to disable collision and talk to him inside his cell.