You corner the merchant, but just as he is about to tell you everything, he is murdered by an assassin. You report to Swift, who relays a summons to you.
This quest is available if you have completed the quest Reap the Whirlwind.
Starting the Quest
Talk to Swift in the Hall of Flames in Ul'dah to begin the quest.
Speak with Bartholomew
Use an aetheryte to go to The Chamber of Rule. Go to the southwest of the circle to where the orange arrow is pointing on the minimap. Talk to Bartholomew to complete the quest. There will be a cutscene.
Next Main Scenario Quest
After you complete the quest, talk to Alphinaud to accept the next quest: Stories We Tell. There will be a cutscene.