Are there any movies with demons in it? 10points?

I've seen one but I don't remember what it was called? I'm looking for a movie with a demon that goes into a human (teens) body and when one of that persons friends talk to him/her they seem to acts odd, quite, evil, where is they look like that human. But since there like possesed they don't no what's going on. Idk is there any movies like that and I'm not talking about exorsisims. NO exerosism movies I'm not lookin for the exorsitcist I'm looking for someone who can go out to school puplic, look human but have odd supernatrual abilities there friends never saw and tehy act diffrent and they suspect that a demons controlin him/her because they became evil/quite emosionless. The demons in the persons body being quite smart evil etc. I don't no how to decribe it... somthing like meet joe black where the spirit took over his body that kinda thing but alittle more evil gory non romance. They look like they have no emosion etc. Thankss :) plzz helpp if ur good at movies :)