Mystery Key is a Key in Dark Souls.
The purpose of this key is unknown.
Mystery Key Usage
- Free Lautrec. Behind a breakable door, on the upper floor of the Undead Church, opposite end of boss entrance.
- If Lautrec is freed, he will be available as a summon for the Bell Gargoyle boss.
- He will also give a gift of one Sunlight Medal when he returns to Firelink Shrine.
- If Lautrec is not set free, he will still escape his imprisonment after the Gargoyles are slain, but gives no gift.
Mystery Key Location
- Found behind the first ladder, after the armored boar, when going through the cellar in Undead Parish.
| Archive Prison Extra Key | | Archive Tower Cell Key | | Archive Tower Giant Door Key | | Basement Key | | Big Pilgrim's Key | | Broken Pendant | | Cage Key | | Crest Key | | Crest of Artorias | | Dungeon Cell Key | | Key to Depths | | Key to New Londo Ruins | | Master Key | | Peculiar Doll | | Residence Key | | Sewer Chamber Key | | Undead Asylum F2 East Key | | Undead Asylum F2 West Key | | Watchtower Basement Key |