Return to the town crossroads, and go forward to the burned house.
Enter it and use your skeleton key to open the bone lock. Go downstairs.
Use the red and green disks to start a puzzle. Turn the disks by using the colored arrows to the right or left (1) to fill in all the grey spaces. (2) Work to fill all spaces – each outer strip should have one color in each band. (3)
Once completed, a door will open for you to go downstairs.
Zoom in on your right at the door, and use your skeleton shaft key to start the puzzle.
Go around the outside clockwise, then the middle counterclockwise, then the inner section clockwise to solve the puzzle.
The door will open, you have found the witch. Congratulations!