Agmont Juste

The Necropolis
If you try to talk to him while at level 19 or lower, he will reply:
 * Agmont Juste: I'm sorry, I cannot speak with you now. I have duties to attend to.

If you are at level 20 or higher, however, he will reply:
 * Agmont Juste: We cannot ignore these signs. Something stirs once more in the Orchard of the Macabre. And if I am right, then our worst fears are true - The Black Abbot has returned!
 * You: The Black Abbot? But I thought he had been destroyed!
 * Agmont Juste: So we believed. Yet the Abbot is a lich - and if a lich's true phylactery is not destroyed, then it's merely a matter of time before the lich reforms.
 * Agmont Juste: The reports from the orchard so far are confused and contradictory. I need someone to go there and get to the heart of the matter.
 * You: The dead should stay dead. I'll help clean up the Orchard. (Bestow chain)
 * You: Why don't you investigate the Black Abbot yourself?
 * Agmont Juste: Would that I could! But my superiors are more concerned about a pack of lycanthropes that are hiding in the Orchard.
 * Agmont Juste: Forgive me for saying so, but sometimes my colleagues are zealous about the wrong things. What do a few werewolves matter compared to the Black Abbot?
 * You: I'll help clean up the Orchard. (Bestow chain)

A Surprising Alliance
After getting the chain, he will assign you your first objective:
 * Agmont Juste: We've heard that the Emerald Claw and the Blood of Vol have allied with the Black Abbot and his minions. If this is true, then the Black Abbot has gained powerful allies!
 * Agmont Juste: Nesta Davir has been looking into this. Speak with her to learn more.
 * You: I'll find out what's going on (Advance chain)
 * You: In the past, the Blood of Vol and the Emerald Claw opposed the Black Abbot's attempt to ascend to godhood.
 * You: But now it seems they're all working together. Yet what could have brought these old enemies together? There must be something - or someone - behind this change of heart.
 * Agmont Juste: What's so troubling about the Black Abbot working with the Blood of Vol?
 * You: What else should I look into? (Restart dialogue)

After you successfully completes Desecrated Temple of Vol, he will say:
 * Agmont Juste: Then it is as we feared - the Abbot has found new allies.
 * Agmont Juste: We should look to his old allies as well - they may have returned along with the Abbot.
 * You: What else should I look into?

After you successfully completes all the quests, he will say:
 * Agmont Juste: Yes, but confronting the Abbot is a much larger task. You will need quite a bit of help to destroy him once and for all. Speak with Hamond Byre when you are ready to face him.
 * Agmont Juste: For now, please accept the thanks of the Silver Flame, as well as this gift.

After completing the chain and take the reward, if you talk to him again, he will reply:
 * Agmont Juste: Welcome back,.