Lurking around in my head

An image lurks in my head,
its still there when i go to bed.
It never goes its always there,
lurking around in my head.

I cant make out who you are,
i cant understand what you want.
Just a blurred image of soemone dead,
lurking around inmy head.

I try to put it at the back of my head,
but the more i try, the more it gets close.
Yet i still can tmake out whose,
lurking in my head.