You must go to the projecter room and there is a window where you can see the cages. And then there are some buttons in front of the window. Before you press the buttons, you must get the pin from Symone's room in the drawers on the second day. And then go to Brady's room and unlock the locked drawers. Then read the magician's book that you find in the drawer until you find the sequence for the buttons in the projecter room. Then go to the projecter room and press the buttons in the correct sequence...
I hope that helped...