Now head to room K, use your map if you need to know where it's located. On your way, stop in room L and take the magnet, lying on the floor and flip the swtich to green while you are at it.
Move left and then click the down arrow and use your silver key to unlock the door. Once inside, flip the swith to green. Click on the pictures to take a closer look. There are 3 pictures from left to right, 1st one is labeled Randy, Randy was 10 years old, 10 years ago. Next, James, he is 3 years younger than the middle brother. Roger, is 12 years older than Randy. This means that Randy is 20(the middle brother) James is 17, the youngest and Roger is 32, he's the oldest. Note the order of the pictures. Now click on the box next to the bed. The initials RJR, enter the numbers of the ages in order, 201732. Inside you will find the green gem for the taking!
Now go right and take the key from the cove.