The Midnight Meeting Dragon Age II Guide

Received from: reading the message by the desk [Hightown - Hawke Estate]

You will be able to start performing this task only if during the main quest Act of Mercy earlier in the game you killed the leader of Templars - Ser Karras. To activate the quest described before you must go to the localization [Hightown - Hawke Estate] and by the desk read (M14, 12) #1 the message titled The Midnight Meeting #2. Click on Accept if you intend to meet the anonymous friend.

Now you can leave the mansion and at night go to the localization [Hightown]. Head towards blacksmiths' area (M4, 19), and you will come across Templars #1. No matter which dialogue option you choose, you will have to fight so start attacking the lieutenant of the Templars #2 and people who accompany him. Watch out because later in the battle you may have to face Templar hunter. If you eliminate all enemies, you will complete the quest and obtain 1 sovereign.