I think my earliest ghost experience occurred when I was about four or five. My dad was out on a business trip, so I spent the night on his side of the bed. I really liked to sleep in my parents' room, so I would take any opportunity I could to stay in there, usually sleeping on the floor in a sleeping bag. I also found their bed to be comfier, so one of them being gone meant I got the bed.
My dad's side of the bed was closest to the bedroom door, which my parents always keep open. Their door is right above the stairs. On the other side of the stairs is our study, which is always well-lit at night. Because of this, the light shines into my parents' room. You can't stand in the bedroom doorway, or anywhere near it, without being in full view from my parents' room.
I woke up during the middle of the night, and opened my eyes. To my surprise, there was a man standing in front of the bedroom door in the light. But, he just looked like a dark outline. I should have been able to see his face or the color of his clothes, but he was all black. I can't explain why, as I couldn't see his eyes, but I felt like he was staring at me. I was absolutely terrified, as I knew a strange man shouldn't be in our house at night. But, at the same time, there was a sense of calm. But I also felt a sort of sadness around the calm. I don't know how to explain it.
The man said "What are you doing here?" His voice was pretty deep. He sounded confused and a bit sad. But, there was an air of amusement in his tone. You could hear a slight smile in the words. He slowly turned towards the stairs, and stepped out of sight.
The weird thing is, the stairs in our house are pretty loud. I can hear someone walking on them from my bedroom, which is a farther away. But I never heard him walk down the stairs.
A minute or two later, I woke my mom up and told her I saw a man in the doorway. She searched the house, but didn't find anyone. She told me it was just a dream, but I was definitely awake. I stayed up the rest of the night, staring at the doorway. But nothing happened.
I never saw this man or heard his voice again. I've always remembered him though. I honestly don't believe he was there to scare me - he seemed nice. I've always wondered why he's never come back.