Ghosts are figments of novelists’ and Hollywood movie makers’ imaginations. Ghosts are the souls or spirits of the dead that somehow manifest themselves to the living. Despite popular stories (Dickens’ A Christmas Carol, etc.), no one has ever proven the existence of Ghosts. For decades, James Randi has offered a prize of $1,000,000 dollars to anyone who can prove the paranormal. He hasn’t had to pay anyone yet.
As those who follow Jesus “We believe… in the resurrection of the body and life everlasting.” The transformation in Christ that begins at baptism reaches culmination when we die. Death is when our souls separate from our mortal bodies and our mortal bodies decay. We hope and trust our souls will be united with a glorified body like through the power of Christ’s resurrection (see the Catechism of the Church #997 ff.). God does not abandon us in death, but brings us to new life in Christ, life eternal. Read I Corinthians, chapter 15. “Behold I tell you a mystery, we shall not all sleep but we shall all be changed…”