My father died on 9-11. The night before he had a conversation with my then 3 year-old daughter. We were stunned to hear her speaking with him as if she were 5 years older. They were talking about her life through high school and going to college, etc. When she handed me back the phone, he was telling someone across the room in Riverside about how his granddaughter was really going to be something. He once refused to take of his shirt for five days after we left Columbus because "it is all I have to remember her by". He was disabled after an accident and his back was fused in 8 places. Hence, he could not fly and never visited us in South Africa.
Dad died within hours of the planes hitting the WTC, after my daughter had gone to bed in Africa. Since the floors her room were polished wood, we always put her toys up on the shelves in her room. Because 3 year olds get up to stuff, the first shelf was four feet off the ground, well out of her reach, and her favorite toys were on the top shelf, 7 ft off the ground. As I put her toys away, I told her that her grandfather was in a coma and that I was trying to get to the USA to see him. I checked on her several times before I went to bed at midnight. On the final visit to her room, I told her that all flights were cancelled and that I would not be able to go. She finally went to sleep and I went to bed.
Dad died at about 1am South African time and, after we were awakened, I went back to bed and into a deep sleep until my daughter awakened me at 6am singing and in a very cheerful mood. She began to talk about her grandfather and how much fun they had playing the night before. She was rather giddy and we decided that it would be wise to break the news to her because people were beginning to call us and she would overhear. As RugbyBuck or Shetuck will tell you, my daughter always has been the most calm and pleasant child. She never once threw tantrums or acted badly.
Until we told her. She was amazed. She kept yelling that we were lying and that her grandfather had been there playing with her. I told her that we knew, if he had one wish it would have been to play with her, but he was in America in a hospital and had passed away. She was crying and throwing things in our room. Telling us to stop lying. I tried to explain that she probably had a nice dream and it was wonderful...when she was nearing an emotional breakdown. At that point, she took me to her room, yelling, "He was here. He was here. We played with my toys!"
When I entered her room, all of her toys, all of them, were on the floor. You could not walk to her bed, they so covered the floor. My wife and I looked at each other in total amazement. Was this the last wish of a dying man who suffered so much pain without complaint for more than 25 years?
After we told my daughter that I believed her, she calmed down and we said prayers for Dad. When we were done, I went into the bathroom to get ready for work when I felt a coldness in the room. I said, "Dad if you are here, give me a sign." Our electronic scale lit up and began showing different numbers.
So, yeah, I believe in ghosts. I don't believe that they can haunt you and hurt you, but I do believe that the human soul released from the bondage of the body and not yet ready to move on, can visit and maybe even do good.