The Black Office

The Black Office was a virtual representation of one of Arno Dorian's genetic memories, relived by a Helix initiate through the Helix Navigator.

Description
Arno received a letter from the Assassin Council, which instructed him to investigate the existence of the "Black Office".

Dialogue
Arno read the letter from the Council. Arno entered the post office. Arno assassinated three spies of the Black Office.
 * Letter: It appears that there is some sort of secretive activity, loosely called the "Black Office" operating behind the scenes in the Post Office near Place Vendôme. Whether this Black Office exists and just what it may be up to is a matter of conjecture. Infiltrate the Post Office and investigate the existence of the so-called "Black Office". - The Council
 * Guard: Where is the letter for Captain Bonaparte? Are you reading it back there?
 * Spy 1: Don't be absurd.
 * Guard: The Capatin is expecting some urgent correspondence from the front.
 * Spy 1: Of course, of course. Don't worry. Everything will be taken care of in due time.
 * Guard: See that these packages are taken upstairs. Never mind why.
 * Spy 2: Hm... more directives from the Committee of Public Safety... Best to do their bidding - they're a prickly bunch.

Outcome
Arno investigated the Black Office, assassinating three of its spies.

Reference

 * Assassin's Creed: Unity