The quest listed as a prerequisite, The D'Morte Family Crest, is not required to start this quest. Although in terms of lore progression it is recommended that it be started beforehand.
Steps[]
You must collect four scout reports inside The Tombs of Night: A Search For Answers. The reports are found on wounded scouts in the zone. These are spawned by killing specific named monsters. Once the named monster is dead, simply click on the scouts body that spawns somewhere nearby to receive the quest update.
The Mold Reaper: Spawns at the end of a ring event involving mist grinnin sporechanters at ( 78, 6, 3 ) Copy/waypoint 78, 6, 3
Kill all 7 groups of mist grinnin ruffians in The Maw of Mortality ( 20, -23, 95 ) Copy/waypoint 20, -23, 95 and the nearby caves ( -20, -24, -92 ) Copy/waypoint -20, -24, -92 and ( -67, -24, -69 ) Copy/waypoint -67, -24, -69
Return to the Maw of Motality ( 36, -26, 58 ) Copy/waypoint 36, -26, 58 and kill the 3 groups of mist grinnin summoners with 4 ruffians each that (eventually) run into the POI
Kill the mudrakers that spawn around the NPC version of Chief Strongarm (you might have to hail the NPC to spawn the mudrakers)