Atlas Fallen The Imprisoned Priest is by far the trickiest quest in Monsalar The Wildlands region of the video game developed by Deck13 Interactive, and one of the easiest to miss.
Atlas Fallen Imprisoned Priest side quest is triggered by finding a Lore Item or a note about a priest who fell from grace and was imprisoned in one of the priest estates.
Your objective is to find and free the priest; however, to do this, youβll need to get the Mentorβs Cell Key, which is not an easy task.
As such, if you wonder where to find the Atlas Fallen Mentorβs Cell Key and how to free the Imprisoned Priest, Iβll walk you through all objectives in the following guide.
This side quest also allows you to unlock The Mentor achievement/trophy on Xbox and PlayStation.
How To Start The Imprisoned Priest Quest in Atlas Fallen
To start The Imprisoned Priest Atlas Fallen side quest, first, youβll need to find one of the 61 Monsalar The Wildlands Lore Items inside the temple north of the Spider Rock Anvil. Specifically at the location marked on my map below.

The Lore Item is a log, or a Journal if you want, that is easy to miss.
After reaching the temple I marked above, loot everything inside the side room (pictured below).

The Fallen from Grace Lore Item talks about Murshid, a priest imprisoned long ago. By picking it up, youβll start the Atlas Fallen The Imprisoned Priest quest and your first objective is to find the said cleric.
Atlas Fallen Imprisoned Priest Location
Finding the priest is not difficult; however, releasing him is a different story. So now that you started the side quest, make sure you track it in your journal, then open your map, and youβll see a new objective marker northeast of your current location and Lithesta.

Head to the location on the map above, and youβll find another temple on top of a hill. But as you are about to find out, a guard will stop you from getting inside.
Talk to the guard, and heβll tell you that you are not allowed to enter unless you are a priest. Or pay 500 Tributes. Bribing the guard, in this case, is the fastest way to get inside. If you donβt have the required amount of Tribute, consider selling some of the Artifacts you have found at any merchant.
Now, get inside the prison and look around, and in a cell, youβll see the Deviant Priest below.

Talk to the priest to unlock The Mentor trophy/achievement, and heβll tell you that he was Morrathβs mentor, but he failed to turn him into a different man.
The priest abruptly interrupts his story and asks you to free him if you want to know more. This means that you need the priestβs cell key.
Where To Find The Atlas Fallen Mentorβs Cell Key
To get The Imprisoned Priest Mentorβs Cell Key quest item, youβll have to do some investigations. Start by talking to Armath, the NPC, in front of the priestβs cell. When approaching him, you have two dialogue options:
- Give me the key to the cell. Now.
- Could you give me the key to the cell?
Obviously, Armath refuses, but the first option provides a hint from Nyaal. He suggests you persuade Armath and force him to give you the key.
But you have no leverage, so you must find something to force Armath to hand over the Mentorβs Cell Key. How about some Compromising Documents that explain what happened to the missing guard?
To get the documents and the Atlas Fallen Mentorβs Cell Key from Armath, head outside through the gate nearby and descend the stairs to reach the templeβs graveyard.
Here, youβll find a Lore Item and a buried chest you can retrieve while standing near the glowing patch of sand. But there is a third secret inside the graveyard, and youβll find it at the location marked below.

What you have to do is place yourself near the spot above and press Up on your DPad to raise the coffin of the missing guard. Alongside his corpse, youβll also find some Compromising Documents which offer you the leverage you need to obtain the Mentorβs Key.
Head back to Armath and ask him again to give you the key, outlining that you have found the truth about the missing guard.
Once you contain the Prison Key, head back to the Deviant Priest and hand them over so he can exit his cell. Now heβll finish his story, and youβll obtain the Iron Mask Cosmetic Item; however, it is recommended not to leave the area just yet, because another prisoner needs your help.
He is the thief you have helped in Bastengarβs Underground area, and he needs your help to bury a piece of evidence.
So consider starting the Two Can Keep a Secret Errand after you finish Atlas Fallen The Imprisoned Priest quest.