Now that you have won Gundobald's trust, he is willing to divulge what he knows of the masked man.
This quest is available if you have completed the quest Come Highly Recommended.
Starting the Quest
Talk to Gundobald in Little Ala Mhigo in Southern Thanalan to begin the quest.
Speak with the Youths
You can speak to the youths in any order. For example, go south and talk to Waldhar, then go southeast and talk to Adalind, then go northeast through the tunnel, go east past the Aetheryte, and go southeast through the tunnel and talk to Sifrid, then go south and talk to Talebot.
Report to Gundobald
Go back to the western side of Little Ala Mhigo and talk to Gundobald to complete the quest.
Next Main Scenario Quest
After you complete the quest, talk to Hremfing to accept the next quest: Wilred Wants You.