You think your apt is haunted?
You didn't give us much information to go on. Find out who the former tenants were (all of them) and find out if anyone died there. Although entities (ghosts) have never been completely proven it doesn't mean they don't exist. A friends parents had a so called ghost in their home and he kept moving the picture over their fireplace. I didn't believe it so one day our friend invited us over. Things went along well for a couple of hours and suddenly the picture was pushed off balance and just as calm as could be our friend's father said, 'Now George that will be enough of that you'll scare the guests.' With that dear old dead George put the picture back in place and that was that. I wasn't having any of it and thought my friend's parents were playing a joke on us, so I went up to the picture and looked behind it and on the sides and there was nothing there. I left the picture a little crooked and George straightened it! So who am I to argue!!