The shelf marked McM in the castle library opens the hidden stairway to the castle dungeon. You can only click it if you have the Library Slip from the Mordred Museum.
Get the gold coin from the fountain to pay your admission. The slip is in a stack of books.
When you have the Library Slip, you can click on the McM shelf in the lower aisle of the castle library, to open the secret stairway to the dungeon.
it is McM
under the library, you click on the McM label and stairs appear
in the castle library click mcm in the non-fiction section to get into the dungeon
McM
Go to the library and then there will be a sign that says McM. Click on it and you're in!
you click on the paper under mcm
The McM is on the bottom floor in the library. You can click on the mcm if you have the library card. The library card is in Mordred's house museum.
The dungeon appears if you click McM, after you got the library slip from Mordred's House/Museum. You can get the coin from the fountain, where it is shining.
You click the McM place.
you have to go to the non- fiction section and click on McM!!
Its behind the McM thing I cant click it -----{---@ YOU SUCK LOLOLOLOLOLOLOLOLOLOLOLOLOL
Once you have the Library slip, you can press the scroll McM on the lower aisle in the castle library, which will open the dungeon stairway.