- Talk to Delvin Mallory in Riften.
- Talk to Olfrid Battle-Born in Whiterun for the details.
- Steal the incriminating letter.
- Forge the prison registry.
- Tell Olfrid the job has been done.
A Special Job
Once you have completed five Thieves Guild extra jobs in the city of Whiterun, Delvin at the Ragged Flagon will have a "special job" for you. Delvin explains that he has received word from Olfrid Battle-Born, a wealthy Nord living in Whiterun, with a unique request. Travel to Whiterun and speak to Olfrid, who explains that "Arn", one of his old war buddies wanted for murder in Solitude, has been arrested for drunkenness in Whiterun. In order to save his friend from the executioner's block, he wants to set Arn up with a new identity. To accomplish this he asks you to steal a letter warning of Arn's true crime and then change Arn's name on the Whiterun prison registry. With these done the guards will be permanently off the trail and Arn will be given a prompt release. Olfrid warns you the job will not be easy; both items are located in Dragonsreach: the letter is in the jarl's chambers and the registry is on the steward's desk.
Rename the Prisoner
The jarl's chambers are always accessible, but your status with the jarl determines whether you can simply walk off with the letter in his room or if you must steal it. If you do not have a standing relationship with the jarl, the guards will be on alert, so you will want to sneak through the rooms. Closing the chamber doors before taking the letter and altering the prison ledger minimizes your chances of being caught.
Olfrid is grateful that his friend will only have to spend a few days in jail for his drunkenness instead of facing an executioner's axe for murder, and gives you a random enchanted ring as a reward.
Report back to Delvin for your pay. Delvin will inform you that Olfrid has "pledged the full support of the Battle-Born clan to the Thieves Guild", and that a new merchant has set up shop in the Flagon.
- After completing this quest, three Thief Cache barrels will appear around Whiterun.
- The quest is actually fairly easy if you've completed either Bleak Falls Barrow or the Battle for Whiterun for the Stormcloaks, because after those quests, you will be on friendly terms with whichever jarl is in charge, allowing you to take the letter from his rooms freely.
- Although Olfrid's friend, Arn, is supposed to be in Whiterun jail for drunken behavior, he is nowhere to be found in Dragonsreach Dungeon, or anywhere in the game for that matter.
- The following empty quest stages were omitted from the table: 0, 30, 40, 45.