Oblivion:A Knife in the Dark

Quick Walkthrough
# Once you've murdered an innocent, sleep in any bed in Cyrodiil (see bugs).
# Receive a visit from Lucien Lachance.
# Travel to the Inn of Ill Omen, south of the Imperial City.
#*(Optional) Speak with Manheim Maulhand about Rufio.
# Confront Rufio and kill him; then sleep again in any bed.
# Receive another visit from Lucien and join the Dark Brotherhood.
# Travel to Cheydinhal and enter the abandoned house.
# Speak the passphrase and enter the Dark Brotherhood Sanctuary.
# Speak with Ocheeva and receive the armor of the Brotherhood.
# Speak with Vicente Valtieri about your first contract.

Detailed Walkthrough
Invitation Only
You may overhear a rumor spreading in Cyrodiil about the recruitment of the group of assassins known as the Dark Brotherhood: ''"They say that when you murder someone, the Dark Brotherhood comes to you in your sleep. It's how they recruit new members." This means that in order to become recruited by the Brotherhood, you must murder an innocent in cold blood. Once you have completed that, the cryptic message "Your killing has been observed by forces unknown..." will appear in the corner of your screen, indicating that the next time you sleep in any given location, you will be visited by a member of the Dark Brotherhood. For suggestions on potential targets to murder, see this page.

A Blood Pact
thumb|right|"You sleep rather soundly for a murderer."
After taking an innocent life, the next time you sleep you will be awoken to find a mysterious man to appear at the foot of your bed. He will introduce himself as Lucien Lachance, a Speaker for the Dark Brotherhood itself. He will propose an opportunity to join the ranks of the Brotherhood... at a price. Responding to his proposal, he will continue to explain what must be done in order for that to happen: "On the Green Road to the north of Bravil lies the Inn of Ill Omen. There you will find a man named Rufio. Kill him, and your initiation into the Dark Brotherhood will be complete. Do this, and the next time you sleep in a location I deem secure, I will reveal myself once more, bearing the love of your new family." Lucien also hands you a personal gift, the Blade of Woe, though it is not required to use it.

Lucien will then cast a chameleon spell on himself and leave the area. This presents you the only opportunity to kill him, but you must do so before he leaves the cell. This immediately ends the quest, but also means you can never join the Dark Brotherhood.

An Ill Omen for Rufio
thumb|right|... as Rufio prepares for eternal sleep
If you choose to accept Lucien's request, you must now travel to the Inn of Ill Omen, which is situated between the Imperial City and Bravil along the Green Road. Upon entering the inn, you may choose to speak with the inn's owner and publican, Manheim Maulhand, about Rufio, and he will openly tell you he resides in the basement.

You can find the entry to the basement, immediately to your left as you enter the inn on the floor. You can usually find Rufio in the room at the very end of the corridor, either wandering about in his room or sleeping. If you initiate conversation with him, Rufio will panic and attempt to flee after the conversation, though he won't leave the basement, making for an easy and clean kill.

The Signing of a Covenant
thumb|right|"What is the color of night?"
Once you have killed Rufio within the basement of the Inn of Ill Omen, Lucien will once again seek you out the next time you sleep. He will give you your next task: ''"[...] The slaying of Rufio was the signing of a covenant. The manner of execution, your signature. Rufio's blood, the ink. As a Speaker of the Black Hand, I directly oversee a particular group of family members. You will join that group, and fulfill any contracts given. You must now go to the city of Cheydinhal, to the abandoned house near the eastern wall. Enter the basement, and attempt to open the black door. You will be asked a question. Answer thusly: "Sanguine, my Brother." You will gain entrance to the Sanctuary. Once inside, speak with Ocheeva. [...]"

Lucien will once again disappear, leaving you on your way to the Dark Brotherhood Sanctuary, hidden in an abandoned house in the eastern part of Cheydinhal. When you enter the abandoned house, make your way through the basement until you encounter the black door. Activating the door will initiate the question: "What is the color of night?" Respond with the passphrase: "Sanguine, my Brother." and you will be granted access into the Sanctuary and begin your new life with the Dark Brotherhood.

Welcome to the Family
thumb|right|"Greetings! Greetings! I am Ocheeva, mistress of this sanctuary."
Once inside the Dark Brotherhood Sanctuary, you will be greeted by Ocheeva: "Greetings! Greetings! I am Ocheeva, mistress of this sanctuary. Lucien has told me all about you. Let me welcome you to the Dark Brotherhood! You stand in our sanctuary. May it serve as your new home, a place of comfort and security whenever the need arises. When you're ready for work, go and speak with Vicente Valtieri. He handles all assignments for the new family members. But before you go, please accept this gift from your new family. A unique set of armor, lighter than normal leather and black as the Void. [...] Vicente is waiting. You'll find him in his quarters. Go now, my child, and may Sithis go with you." She will then give you the armor of the Brotherhood: a Shrouded Hood and Shrouded Armor. This ends the current quest, and you are now directed to go and speak with Vicente Valtieri who will handle all the beginner contracts in the short post-quest Welcome to the Family.

thumb|left|"Please do not let my appearance... unnerve you."
If you ask him about contracts, he will explain: "A contract is a pact one enters into with the Dark Brotherhood. They provide us with the gold, and we remove someone from existence. A contract is fulfilled by a skilled assassin such as yourself, who keeps the Dark Brotherhood's end of the bargain. So it has always been. While carrying out a contract, you may have the opportunity to earn a bonus if certain parameters are met." And if you inquire more about the bonuses offered during a contract, he will elaborate: "Some contracts are straightforward. Find the target, eliminate them, then return to the Sanctuary. No time limits or complications. However, many of our clients request that their contracts be carried out in a specific manner. A certain place, a certain method of elimination. We try to honor this requests whenever possible. After all, the Dark Brotherhood's reputation has been built on providing... good service. Any Brother or Sister who can complete a contract while fulfilling a specific request will receive a valuable bonus, oftentimes a powerful magic item."'' Once you accept your first contract from Vicente, the quest A Watery Grave will begin.
 
Notes
  An achievement will be unlocked after speaking to Lucien for a second time.
There is an item called "Rufio's Skull" which looks the same as a regular skull, however it only exists in a cell called  , which is inaccessible in-game.
Apparently Lucien was originally meant to leave you the note   asking you to come to Fort Farragut for this quest but the item never appears in-game. Lucien only asks for you to come to Fort Farragut during the quest The Purification.
The Shrouded Armor is excellent light armor, especially for low-level characters. Its enchantments are invaluable to almost any character, as it fortifies Sneak, Light Armor, Blade, Security, and Marksman by 8 points each, or 10 points if you also equip the Shrouded Hood. Since both items have zero value, any smith will repair them for only 1 gold each.
Once you kill Rufio you can immediately sleep in his bed to initiate the next part of the quest.

Bugs
 
 The console command   will allow you to continue the quest as normal.

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