Mission Name The Secrets of Worship
Number PM4-3
Title Granted The Lost One
Items Needed Coral Crest KeyRareExclusive
Sealion Crest KeyRareExclusive
Key ItemReliquiarium Key or Key ItemTemple Knight Key
Reward Access to Sacrarium (Given at the start of the quest after interacting with the Walnut Door)
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The Savage Slanderous Utterings
Replay Cutscenes
The Secrets of Worship Latteaune Tavnazian Safehold (H-6)
The Secrets of Worship Goblin Footprint Misareaux Coast (K-10)
The Secrets of Worship (pt.1) Goblin Footprint Sacrarium, Map 1 (E-7)
The Secrets of Worship (pt.2) Goblin Footprint Sacrarium, Map 1 (E-7)

Ground Map

Lower Map


NOTE: This mission can now be done solo. After obtaining the Coral Crest KeyRareExclusive and the Sealion Crest KeyRareExclusive, they can be traded to Quelveuiat after completing A Hard Day's Knight for the Key Item Temple Knight Key.

  • Click on the Walnut Door at (K-7) upstairs next to Parelbriaux for a cutscene.
    • This door is very close to Justinius, just take the small ramp up and its right there.
  • Head to the Iron Gate in the northern part of Misareaux Coast (G-4) for a cutscene. After checking this, you will have access to Sacrarium.
    • The fastest way there is the Home Point near the Undulating Confluence. You should have this if you followed the suggestion to finish Rhapsodies of Vana'diel up to or past Both Paths Taken first, but if you haven't, it's strongly recommended you do before continuing further in Chains of Promathia.
    • This is the entrance to the Sacrarium. Note that the entrance maze walls on Map 1 will shift with each Vana'diel day.
  • Traverse the Sacrarium maze until you find the Fomors. Kill the Fomors to obtain a Coral Crest Key.
    • On the first map of the Sacrarium there is a big box area which is a maze that has interchanging corridors varying on the current elemental day in Vana'diel; see the map above for assistance.
  • Kill Keremet for the Sealion Crest Key.
    This part can be skipped if a party member already has a Sealion Crest Key
    • Defeat the skeletons in the two hallways (J-7/8) and (J-8/9).
      The two hallways are each lined with 6 Skeletons. The Skeletons don't aggro or link, and are weak, but if anyone attacks Keremet they will rush to aid him.
      • Defeat all 12 Skeletons first, then pass through one of the doors at the end of the hall (K-8). Once they are defeated you have about 30 minutes before they respawn.
        • If you don't want to, or if you forget, these 12 Skeletons are so weak that two Stonega II blasts from 2 BLM (or Banishga II from a WHM) will completely destroy them, and do some healthy damage to the NM.
    • Now you can kill Keremet, a Corse NM. Keremet is at the far side of the room.
      • Keremet can be Silenced. He is highly resistant to stun, sleep, and Blizzard spells.
      • Like all Corses, Keremet can Charm members of your party with the Danse Macabre TP attack. Charmed party members MUST be slept. He has ice spikes which can be dispelled and an AoE silence move.
      • Kill Keremet and obtain the Sealion Crest Key. Give it to someone who doesn’t have either of the Coral Crest Keys.
  • If completing this mission solo:
  • If completing this mission in a party:
    • If you are doing this with only 2 people, farm one Coral Crest Key for player 1, and one Sealion Crest Key for player 2. After opening the lock the first time, farm another Coral Crest Key for player 1. This is the only way to open the door.

Old Professor Mariselle

All quest steps below this point are mandatory to complete the mission.

Unlock the Door

  • Head to (H-7) (second map) in the Sacrarium and find a door with two keyholes
    • If you have the Temple Knight key, simply click either keyhole and proceed through the door, and then skip to the Cutscene section below.

Both keys must be traded. Coral Crest Key first, Sealion Crest Key second.
When you get the text "<Player> is holding the lock open...", that is when the Sealion Crest Key is traded.
When the Coral Crest Key holder gets the message "<Player>'s hand has grown numb!" then it's too late to trade the Sealion Crest Key. make sure that whoever makes the first trade is ready to give a text signal i.e. "go" or "now" when you get the first text about the lock being opened.


  • Find and click on the Wooden Gate at (G-8) for a cutscene.
  • Exit out of the locked door. If you do not have another Coral Crest Key, you can leave a member behind to open the door with the switch, however they will not be able to obtain a Key ItemReliquiarium Key.

Spawn Old Professor Mariselle

Fighting Old Professor Mariselle

  • DO NOT use Tractor. If you do, you will have to click the ??? and start over.
  • He summons two Mariselle's Pupils soon after being spawned.
  • Old Professor Mariselle casts Sleepga II and Silence, and uses Ghost abilities. He seems to have a fair bit of Regen, so constant damage is important.
    • It's highly recommended to use Poison Potions to protect against his Sleepga spam.
  • All three NMs teleport around the room every ~20-30 seconds. Mariselle "despawns" first, along with his two pupils, and then respawn randomly somewhere in the room (the pupils also spawn randomly, sometimes all three are far apart after a teleport). Even if pulled outside the room, it will respawn somewhere in the room again.
  • Beastmaster, Puppetmaster, and Summoner are very useful for this fight because the pets do not lose hate and continue to engage when Old Professor Mariselle teleports around. You can draw him back out again by calling your pet back.
    • If the pet gets slept, this may not work.
  • The fight is very easy at level 60+ with Trust and trivial at Item Level.

After the Fight

  • Once the cutscene is over, you will end up on the other side of the Wooden Gate, unable to open it from that side.
  • If you want to exit back to the Sacrarium, there is a second Wooden Gate in the north wall.

Game Description

Mission Orders
Now that you have learned the Wyrmking's plan, you must travel to the fourth mothercrystal. Nag'molada has informed you where the stone lies. However, you will need the amulet you lent to Prishe before you are to make your way there.