Once you are in Mordred's secret underground lab, you should feed the mouse to the robot owl, Merlin. Next you will PUSH hard through the dirt wall on the left, and go to the back entrance to the dungeon. If you didn't throw the switch in the dungeon (in the library), you will have to go back and do it first.
The bars to the back of the dungeon cell are controlled by the dungeon switch. Go to the Mordred Museum (there's a coin in the fountain), get the library slip and open the secret passage in the castle library (Non-fiction section). Throw the switch and take the cheese. (The "dirt wall" in Mordred's lab can be pushed through.)
Go to the castle and enter the door to your right. On the bottom floor, click on the paperwad, go down the secret stairs, and pull the lever.
mine was astronights and shark tooth they were awsome!
Mordred's lab is in Astroknights Island and in between the hay.
you push through
You go into Mordreds lab and grab a paper and turn it into her.
You move Merlin to the bomb and click it. It's very simple.
Mordreds secret hideout is between the two hay stacks, but first you have to get a key to go through.
You have to get a job at the museum after you take the underground tour
there scattered across the island underground on a boat etc.
She is in the Haunted House Island. She is either in the underground part of the Graveyard or in the picture.
You return them to the guy in the internet cafe.
go underground and there is a gate use it over there
you go in the underground cave but first you need to get the tickets.