Skyrim:Spectral Assassin

The Spectral Assassin is the spirit of an infamous and well-known Imperial assassin of the Dark Brotherhood, Lucien Lachance. He now serves Sithis as a spirit and, thanks to you, is able to continue his work. He can be summoned once a day with the power Summon Spectral Assassin, given as reward for completing Bound Until Death.

The Spectral Assassin is essentially a free follower. He will follow you anywhere at all times until he is killed (although he can get lost). He is equipped with the Dark Brotherhood shrouded robes with matching hand wraps, hood, and shoes, and attacks using a steel dagger. He counts as a summon similar to those created with Conjuration spells, and will occupy the slot as the one summon you are allowed without the Twin Souls perk (see Bugs section).

While he cannot be engaged in conversation, he will comment on many things while he is summoned, such as your current contract for the Dark Brotherhood, events from Oblivion, Sithis, and his own thoughts. It's also revealed that he traveled in Skyrim in his lifetime, prior to events in Oblivion, as he also remarks on each town you visit and his memories of the place. Lucien is able to communicate with Sithis, and ascertain the dread father's desires.

In life, Lucien Lachance was an Imperial assassin and a Speaker of the Black Hand, the core governing body of the Dark Brotherhood. His only formal residence was Fort Farragut, east of Cheydinhal. He was a highly respected member of the Dark Brotherhood and even the Night Mother acknowledged his loyalty, berating a Speaker for claiming otherwise. Lucien Lachance was believed to be a traitor, but he was actually framed. He met a very gruesome death because of his suspected attempt to destroy the Dark Brotherhood.

 
Dialogue
While summoned and following you, the Spectral Assassin can speak many lines based on the context of location, current quest, or other situations.

Locations
Outside: "I remember Skyrim from my youth, and the glistening crimson on fields of white."
Whiterun: "Whiterun, home of the Skyforge. It is said a blade forged in its fires can cut through sinew as if it were parchment."
Riften: "I do so love Riften. I journeyed here in my youth. A thief took my purse... so I took his eyes. It was a fair exchange."
Windhelm: "Windhelm. White as bone, and cold as the Void."
Markarth: "An ancient city, Markarth.   by the Dwemer, the dwarves of old. To think, an entire race... eradicated. Not even I can take credit for that feat."
Solitude: "Ah, yes. Solitude. Seat of the High King of Skyrim. Messy business, kingslaying. Ah, but so very satisfying..."
College of Winterhold: "Do you feel it? Magic. Deep and ancient. It resonates from the College, like the beating of a heart."
Dark Brotherhood Sanctuary: 
"You know, a good Purification might be just what this Sanctuary needs..."
"Dreary, dank, and dimly lit. Truly a Sanctuary to call home."
Near Shadowmere: "Shadowmere, my old and dear friend..."

Quests


Combat


Other


Notes
The Spectral Assassin is voiced by Wes Johnson, who voiced Lucien Lachance in Oblivion.
For more information on recurring characters, please see the associated page.
He is considered a member of the Dark Brotherhood, so if you attack him, you will have to pay a fine to Nazir.
Though he is considered a summoned creature, Restoration spells such as Healing Hands will heal him, letting you keep him as a summoned creature indefinitely (unless you summon another creature).

Bugs 
   This may be to prevent the player from summoning two Spectral Assassins, which would make little sense.