Hey man I'm assuming you read through the walkthrough on the wiki, but just incase ill post this here:
Abram's ghost can be found on the floor 6A of theTower of Frozen Shadow. His ghost goes by the name of Incoherent Spirit. The placeholder for Incoherent Spirit is called incoherent spirit with a lower case 'i'. There is only one spawn and the respawn time is 54 minutes. Killing the Incoherent Spirit will spawn Lucid Spirit of Abrams. Hand him his beard and he will hand you the Arcanum of Rosh. (You have a limited time before the lucid version despawns.)
Note: On floor 6A where Incoherent Spirit spawns you will have to go through at least one trap to get to his spawn point. The trap will
DD you for 700+ damage. To get to the spawn -- Click onto floor 6A, IVU yourself, go straight past the first "T intersection", at the
second "T intersection" go right, hug the wall on your right (DD trap is around here), make another right, and Incoherent Spirit will be
in a little cubby laying down. If he aggros, you will be Harm Touched for 420 damage, make sure you're not low HP from the DD trap. The
spawn isn't marked on the map, and there are no roaming mobs or other mobs near his cubby.
I have NOT done this quest but from looking at the map I believe the spawn is here:
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And for the turn in I would assume it is like most Enchanter quests turn in's with faction issues. Just charm the mob (making him amiable to you) and turn in your items. You just have to use dictate (only 48 sec duration) because noble is lvl 55.
From Wiki: Note: Wenglawk's will not assist Noble Helssen or aggro you despite being right beside him, a KOS 60 Enchanter can invis into the
room, stand in the corner, cast Dictate on him, do the turn in, and gate out
Hope this helped man. GL!