I have a few.
When I was about 18, me and my mum were alone in the house watching TV. At the time we were living in the upstairs flat of a large two storey house - the front door was shared, then there was a small hallway with a locked door to downstairs and another to the stairs up to our flat. There was also a bolted door at the top of the stairs.
It was about 11pm and we were just about to go to bed when we heard someone stamping up the stairs. Immediately we were on edge because whoever it was had to have got through the locked and bolted main front door and the locked door to our stairs, and only me and DM had keys. The stamping seemed to go on for ages, far longer than it took to get upstairs, then stopped. A few seconds later someone started banging on the door at the top of the stairs. We could see the door from where we were and it was moving on its frame, it was being banged so violently. This went on for over a minute absolutely ceaselessly then suddenly stopped. There was no sound of anyone going back downstairs so we assumed whoever was there must still be but when we called out there was no answer.
After about half an hour we decided to open the door. Armed with saucepans (I kid you not) we did - and of course there was nobody there. What's more, the door at the bottom of the stairs was locked from the inside, as was the main front door.
The house was detached, so not noise from next door, and the downstairs flat was vacant at the time.
Another one...
Years later me and my mum had very sadly gone NC (long story). I missed and loved her so much but it was unavoidable for many reasons.
One evening I was out having dinner with DH. It was early, about 7.30pm, and we were looking forward to a lovely Saturday evening - we'd only been married for two weeks so were very much in the honeymoon stage. Suddenly I was overcome by this sudden need to see my mother. I can't describe it - it was all encompassing and I suddenly felt so overcome with this awful sad, lost sensation. One minute I was laughing and chatting with DH, the next I was in floods of tears and had to get home. My mum was living 350 miles away at the time so going to see her wasn't an option but honestly if it had been, I would have despite not having spoken for almost a decade.
I couldn't stop crying that night, was sick, didn't sleep at all. I tried calling the last number I had for her with no luck. I phoned her sisters but they hadn't heard from her in years either.
The feeling didn't leave me for the rest of the weekend and I was planning to go to my mum's city on the Monday morning to see if she was at her last address, and if not search from there. My phone rang at 5 o'clock that morning. It was my auntie. She'd called the local hospitals where mum was living. One of them had told her that mum was admitted after a stroke the previous week and had been doing well, but had had another stroke and gone into a coma from which she didn't wake and she'd died the previous evening. She'd slipped into the coma at 7.30pm on the Saturday - the very same time I was overcome by that all consuming need to see her.
We used to be so incredibly close when I was younger. All of this happened nearly 20 years ago and it may be rubbish but I will never get over the idea that she somehow let me know she was so ill, that she needed me and I couldn't get to her. She must have been so frightened.
I'm the least woo person you'll ever meet but I'll never be able to explain what happened that weekend rationally.