Door Opener
Once you have the combination for the door, you turn it to the right three times 
and stop on the first number. Then you turn to the left and pass the second 
number once and then stop on it the second time around. Now turn it to the last 
number and the door should open

Tip: Installing the patch can cause lockups when you're trying to play games 
saved with the old version. To save your progress, copy your latest save-game file 
created with the patch to a temporary folder, reinstall the old version, then load 
the game and immediately save. Copy the save-game file created with the patch 
to the one that was just created in the Clue directory, using the name of file you're 
copying over. You'll still see the old save-game snapshot at the Load Game 
screen, but clicking the Save button will restore your patched save-game--and 
save all your progress. 

Tip: Jot down the riddles whenever suspects recite them. If you don't manage to 
get it all, just go back and ask them once again--these robots are more than 
happy to repeat themselves all day long. 

Tip: In several scenes, the forward and backward arrow icons change to 
mean "look up" or "look down," which usually indicates that there's something 
important you need to check out in one of those directions.