The party believes Lucian is trying to eliminate Kailas because that bloodline could challenge his rule
According to Aldric Voss in Session 64, Lucian is far worse than his father Corvin ever was, and has colluded with outside forces — the reason Aldric abandoned the Empire’s service
Relationships
Kailas - A hidden rival claimant to the throne whom Lucian appears determined to remove.
Corvin Thorian - His father and predecessor in the imperial line.
Aldrick Voss — A former soldier who served Corvin and left the Empire because of Lucian’s collusion with outside forces.