This is a tip so stop reading if you do not want it.



in the library i found out that you do not need the 4th monkey to get to the secret room above the library. What you do is go to one of the other rooms and get 4 crates and pile them up. If you use 3 crates and a chair this will work also. then pile the objects on top of each other under the entrance of the room . jump up and jump into the hole. be carefull becuase if you fall you will get about 4 points of damage.