Added an extra step because I found the quick walkthrough very confusing without it
# Stake out the [[Dragonborn:Ulen Ancestral Tomb|Ulen Ancestral Tomb]].
# Report back to Arano and obtain the key to [[Dragonborn:Severin_Manor|Severin Manor]].
# Travel through [[Dragonborn:Ashfallow_Citadel|Ashfallow Citadel]] and destroy the conspirator.
# Return to Arano, and follow him to receive your reward from [[Dragonborn:Lleril_Morvayn|Councilor Morvayn]].