"The servants of Savathun hide beneath us, whispering madness through thin walls." - Eris Morn
- Once on Titan, visit Commander Sloane and pick up the quest here.
- Once there, head over to the nearby Lost Sector, Methane Flush to the East of Sloane.
- Inside, take on the normal boss of the Lost Sector, Karugul with the 2 Shriekers and all the Acolytes and Knights.
- Defeat them all, just be mindful that Karugul will likely try to retreat to the back room of the Lost Sector.
- In the back room, you will find Dek-Thra, Who Sows and Tills, a large and powerful Knight.
- Defeat them and return to Commander Sloane.