I believe, but not in ghosts. I do believe in spirits, and the ones you are refering to a called 'familiar spirits' in the bible. We do not inhabit this earth anymore after our time is done here. We go to be with the Lord.

2 Corinthians
5:6
Therefore we are always confident, knowing that, whilst we are at home in the body, we are absent from the Lord:

5:7
(For we walk by faith, not by sight

5:8
We are confident, I say, and willing rather to be absent from the body, and to be present with the Lord.


I would be careful if I was you with your search for these spirits. All they do is cause spiritual confusion and push us away from the Father.