When I was real young, there were certain little things I experienced, never really thought much about it until I got a bit older.
Was when I was about 9/10, these people moved in the house down the block from us, we were fairly new to the area as well so we didn't much know about the history of it. The people who moved in were awesome, very nice, friendly people. They also looked like they had money, they were meeting everyone in the neighborhood, the girl's husband became friends with my dad so they were always working on bikes, he was also into MMA, like my dad, and myself, and they talked about opening a gym.I played, with their kid who was my age and all, and would try to get him into training but that wasn't his thing.
I remember when I went into his house for the first time, I didn't feel too comfortable in there something was bothering me, I felt it even more the second time I went, and I never really wanted to go back into his house, and whenever he invited me, I always came up with some excuse why I couldn't go over, or had him come to my house, or we just went to the park or something.
I didn't see him for awhile a few months later, and I didn't even really see him in school, and I thought it was because his family was having problems, when I finally saw him in school he was really acting out, like he just turned into some huge troublemaker, which was odd because he was painfully shy, and not to sound mean or anything but not physically strong enough to defend himself, yet he had kids, even some teachers afraid of him.
I remember telling my dad about the things I felt over there, and the behavior change in my friend, and he saw the same thing in the husband, and he wasn't around anymore, you'd think if there was a problem with the marriage like a normal problem he'd talk to my dad about it, since they seemed so close, The mother she was always cheerful and a bit of an airhead (again not trying to be mean), but she sure as hell didn't seem like that, and needless to say I kept away from em all together.
I'd hear arguments coming from their house, and I know couples arguing isn't anything supernatural but the drastic change in them had me wondering some things. I'd hear him kicking, and punching on the door telling her he was going to kill her, and the kid, calling them all sorts of names. It kinda became a normal thing, and he'd get picked up, then it would happen again, didn't hear any of that stuff after awhile because he was gone, they were still in the house, then a couple of weeks later they were gone, and things were still in the house I remember hearing people saying they left everything there, lights were on curtains were up looked like someone should be coming back, but no one ever did.
Found out later on that the people who used to live in there before them were into some satanic stuff, like necromancy, believing they could summon spirits to enter dead bodies, the person who told me this, was going on and on about all of the occult stuff they found in the house, and I know that that stuff can do to people, so I wasn't much surprised at their behavior and all, my dad wasn't surprised either.
As for seeing ghost and all never did, but I never liked the feelings I got when I went into their house, and the drastic change in behavior made me really wonder about em. I've never had any visions, or knew anyone who has, though I do know of people who've had similar experiences like myself.