Ghosts or sometimes referred to as spirits I believe are real. I believe that a world of the dead exists and sometimes for various reasons they do cross into the world of the living. Guardian angels (which I believe are those who've passed and have great love for you)may come from here too, so not all "ghosts" are evil.

I don't believe in ghosts!

I have seen two.

You have to be ducked in the head to believe in ghosts
Damn... Must get this spell checker fixed!!!

Ghosts is one way that the demons mislead people by encouraging them to inquire of the dead or make people think that the dead are alive. People grieving over the death of a loved one are often deceived by wrong ideas about those who have died. A spirit medium may give special information or may speak in a voice that seems to be that of a dead person. As a result, many people become convinced that the dead are really alive and that contacting them will help the living to endure their grief. But any such “comfort” is...

Ghosts is one way that the demons mislead people by encouraging them to inquire of the dead or make people think that the dead are alive. People grieving over the death of a loved one are often deceived by wrong ideas about those who have died. A spirit medium may give special information or may speak in a voice that seems to be that of a dead person. As a result, many people become convinced that the dead are really alive and that contacting them will help the living to endure their grief. But any such “comfort” is really false as well as dangerous. Why? Because the demons can imitate the voice of a dead person and give a spirit medium information about the one who died. (1 Samuel 28:3-19) Moreover, as we learned in Eclesiastes 9:5, the dead have ceased to exist. (Psalm 115:17) So “anyone who inquires of the dead” has been misled by wicked spirits and is acting contrary to the will of God. (Deuteronomy 18:10, 11; Isaiah 8:19) Therefore, be careful to reject this dangerous bait used by the demons.
Wicked spirits not only mislead people but also frighten them. Today, Satan and his demons know that they have only “a short period of time” left before they are put out of action, and they are now more vicious than ever. (Revelation 12:12, 17) Even so, thousands of people who once lived in daily dread of such wicked spirits have been able to break free.