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.
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
Click on Merlin (the mechanical owl) and the click on the "green thingy." Bingo! ;D
Go to the library and then there will be a sign that says McM. Click on it and you're in!
Feed the mechanical mouse to Merlin and he will follow you to the dungeon. Click on the owl, then click on the fuel, and he will retrieve it for you.
You have to feed him the mouse. Merlin the owl will follow you into the passage to the dungeon cell, and you can click on him and then the fuel rod and he will get it for you.
Go outside and feed him the robot mouse, and he will follow you into the dungeon. Click the owl and then the fuel rod and he will retrieve it for you.
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.
it is McM
you have to go to the non- fiction section and click on McM!!
No, you use him to retrieve the green fuel rod from the blown-up robot. Click Merlin then click the fuel rod.
go to the book click on the outlined book