Skyrim:Return to Grace

Quick Walkthrough
#Speak to Svari.
#Speak to Greta.
#Retrieve Roggvir's amulet of Talos.
#Return the amulet to Greta.

Detailed Walkthrough
A Concerned Child
When first entering Solitude, you will witness the execution of Roggvir, the guard that allowed Ulfric Stormcloak to escape Solitude after murdering High King Torygg. During this, a child named Svari is being sent home by her father to spare her from seeing her uncle's execution. Svari can always be found in the streets of Solitude between 10am and 8pm when she plays with the other children. Approach her and she will appear quite sad about recent events, specifically with her uncle. When you tell her you are sorry about what happened with Roggvir, she will respond: ''"Thanks. Papa talks about it some. Mum doesn't say much since Uncle Roggvir died. She doesn't even go to Temple anymore. I wish she would. At least that way she'd have people to talk to."'' When you offer to talk to her mother, Svari will encourage you to do it right away and the quest will initiate. 

The Grieving Sister
Svari's mother Greta can usually be found in the family house across the street from the Bards College or browsing the market between 3pm and 6pm. Approaching her will reveal that she is both bitter and sad about the execution of her brother. When confronted with Svari's concerns, she will respond: ''"She did, did she? She's going to get a sit down later." When you tell her that Svari just wants to see her mother return to the temple, she will explain her Nord beliefs: "Well. I wish it were that simple. Maybe it is. Look, I want to go back but I won't feel right in there without a tie to Talos. My brother Roggvir wore a symbol of Talos. He kept it hidden on his person. If I had that... I can't go near his body. Would you get it back for me?"'' Agree to help her and the quest will update and a map marker will point you towards the body of Roggvir. 

Return to Grace
If you started the quest within three days after entering Solitude, Roggvir's headless body will still lie behind the chopping block where he met his demise. If not, his body will be inside the Solitude Catacombs behind the Hall of the Dead. Enter the catacombs and fight the skeleton then locate Roggvir's coffin near the entrance. Pry it open and claim the Amulet of Talos then exit the catacombs. Locate Greta who will cheer up a bit when you hand her the amulet: ''"Thanks so much. I'll return to temple. Here's something for your time and effort."'' She will then hand you a reward and the quest will end. From this point forward, Greta will enter the Temple of the Divines every morning at 6am for nine hours of praying, holding her forbidden Amulet of Talos. 

Reward
 

Notes
If you carry another Amulet of Talos in your inventory, the game identifies them all as quest items. You will have to choose the dialogue option before you can drop, sell, or build with any Amulet of Talos.
It's possible to find amulet in Solitude Catacombs within 24 hours since entering Solitude for the first time. Then you have to steal it from first coffin on your left. So, when quest completed but amulet not taken and reward not given you have a stolen item in your property.

Bugs
 
 
 A solution is to proceed to talk to Svari, then talk to Greta. Mention going to temple, and after she asks you to retrieve the amulet, exit the conversation. Do not choose the "Actually I've got it here" option. Now in the console, type  , this will set the quest to the moment you are supposed to retrieve the amulet. Since you already have it, go into the console once more and type   which will set the moment you should have picked the amulet up. Return to Greta and give the amulet. It will complete the quest and will be removed from the log, though the amulet still stays in your inventory and you won't get the reward she mentions.
 Another solution is, before talking to Greta (or in some cases Svari), to use the console command   (with x being the number of Amulets of Talos you have in your inventory +1) in order to drop all Amulets of Talos. No matter how many you have, one of it (the one relevant for the quest) will always drop separately. After talking to Greta and promising her to retrieve the amulet, just pick up all the amulets you've dropped and talk to her to finish the quest (you might get a leveled reward and complete the quest using this method).
 If you end up with two Amulet of Talos in your inventory, you could try the console command,   to eliminate the duplication.
You can get rid of the quest journal entry and make the amulet dropable/sellable without any console commands by killing Greta before telling her that you have the amulet.
If you tell her you that you have the amulet before you kill her, the amulet is fixed but the quest entry remains in your journal indefinitely.
 
 

Quest Stages