Voices of the Dead
This mission becomes available after completing the quest "The Sorrows Call".
First talk to Bisarane in Proving Halls and then meet him in nearby House of Sorrows. He will ask you then to escort a certain woman, who must examine body of murdered Fae. Responsible for murder is man named Cadoroc.
Taibreah await you next to the entrance to House of Sorrows.
Follow her to the indicated place, killing creatures on your way. You have to protect the woman against them, but this is not difficult task, because Fae can use spells quite well.
After getting to the destination, Taibreah will start a ritual during which you'll be attacked by three waves of enemies. First of them consists of plain Boggart and in the second you'll see two Barghast.
Third wave is the last and the most difficult. You'll be attacked by group of Boggart and Bog Tresha. It is worth to use Reckoning mode now. If you do not have it, try to get rid of Boggart before the bigger beasts starts his attacks. Otherwise it might be difficult to perform any attack by your hero. After all enemies are dead, talk to your companion. She will send you to Sioran Crypt M10(8) in Drowned Forest, where you can find Cadoroc.
Map of Sioran Crypt
1 - Cadoroc
You can find the man in the western part of the undergrounds. The shortest way to him leads through the hidden passage to the left. But you must have certain level of "Detect Hidden" skill to use the passage.
Your opponent uses Faeblades in the fight, so especially mages should be careful not to be hit.
Around in the middle of the battle spiders will join the fight, but they should not be a big problem.
Once all enemies are dead, return to House of Sorrows and talk to Taibrah waiting for you next to the entrance. You'll get reward and the next quest.
A House Divided
To get an access to this quest, complete the mission "Voices of the Dead".
Fae named Taibreah will ask you to save king Bisarane, who fights rebels in House of Sorrows. You have to get into the building through undergrounds called Proving Halls M8(3).
Map of Proving Halls
1 - Taibreah
2 - Cadoroc
3 - Bisarane
4 - House of Sorrows
After getting to the tunnel keep going forwards, fighting waves of Bolgan. The passage is located at the end of the location.
Inside House of Sorrows turn left and you'll get to the place where Bisarane awaits you.
The man will tell you story of his house and send together with Taibreah to ruins of Fallen Hall M9(5). The entrance can be found in The Keening.