On the level "Traditions of the trade" go to room 108, You will have
either the master key or you will have to pick the lock. Then when you
go inside there is a cop in the bathroom, you may kill him, and if you
look in the mirror you will see a ghost behind you. You can get to this
room by first entering the hotel and going to the right and down a
hallway until you get to a door labeled "wing closed" and then go left
and go through the double doors. then go down the next grey hallway and
enter room 108.
-I have managed to shoot the ghost in the bathroom and blood goes on the
wall, See if you can kill it(I know, it is already dead)