The strangest story I know of involving my family happened to my aunt, uncle, and cousin. My uncle is a physicist and works in aerospace, my cousin once graduated followed the same path, both are very focused upon an evidenced-based approach - so very logical. My aunt is a schoolteacher and also level-headed. They live in a big old house with a smaller outbuilding/cottage next to it that was lived in by an older couple - I can't remember the old lady's name but her husband was called George a chap who I had met on a few occasions whilst visiting.
My uncle doesn't talk about the incident, in fact, he has only spoken of it once in my company, but the one time he did it stuck in my mind as he is most certainly not the type to involve himself with idle chatter. Their property is set on the outskirts of a village surrounded by fields and woodland and is a very tranquil spot. The only bother they tend to have is with the occasional rogue rabbit in the vegetable patch or the like. It is an idyllic setting, and this tranquillity was one of the reasons that they had been attracted to the property, aside from its truly stunning vistas.
On the night in question, my uncle was woken by my aunt and the sound of their dog barking aggressively. Aside from my aunt and the dog he also became aware of my cousin screaming "DAD" at the top of his voice! As he explained, it was the middle of the night, and being abruptly roused from his slumber he felt that confusion we can all feel when adjusting from a dream state to reality, and by what was happening. Now fully woken, he quickly got up to go and see what was wrong with my cousin, my aunt looking terrified said to my uncle as he opened their bedroom door that she had heard a woman shouting, that the dog then started barking and then my cousin had started screaming. My uncle went straight to my cousin’s room and, turned the light on and found him still shouting, visibly terrified sat with his knees pulled up to his chest in an upright foetal position, pressed against the headboard. His quilt was on the floor at the end of the bed. My uncle said that my cousin had such a look of fear on his face that it instinctively gave him a terrible sensation of dread and foreboding. My cousin, seeing my uncle lunged at him, grabbing his hand, and attempted to get out of the room, pulling his dad with him (he was about 12 at the time). My uncle was asking him what was wrong but couldn't get any sense out of him, just hysterical sobbing and panic as he carried him out of his bedroom to take him to the safety of his mum. As they stepped onto the landing there, stood in front of him was my aunt with one of my uncles' golf clubs gripped tightly, looking ready to take a shot at his head! Thankfully she hadn't been possessed but was waiting to whack the intruder.
My uncle left my cousin in the bedroom with my aunt, and went downstairs, with the golf club in hand. He found the dog, frothing at the mouth and wide-eyed stood facing a closed door in a manner that suggested that there was somebody or something behind it. Feeling that he might be about to get into a confrontation he praised the dog in an attempt to stiffen their collective courage - he wanted the dogs back up should the worst happen. Looking at the closed door my uncle shouted "I'm coming in" and slowly opened the door. As he turned the handle the dog gave a fearful yelp and bolted in the opposite direction! Now alone, he reached inside the doorway for the light switch as he cautiously stepped into the room.
My uncle, as mentioned, is not one to be carried away by irrational thought but explained that the fear and anxiety that he ran through him that night, as he stepped into what felt like an ominous trap was something he had never felt before nor would ever hope to feel again! The light switch clicked on but for some reason the light in the room flickered on and off in quick succession, giving what he described as a strobe-like effect. Coupled with his fear, this strobe effect was very disorientating and so he did not venture any further into the room as he tried to get his baring’s - but something had caught his eye... On the wall next to his bookcase there was an image, what looked like a large pyramid shape that should not have been there. He described it as looking as if some vandal had painted it without care as the edges of the lines had run, dripping down. It was as he tried to rationalise what this might be that he spotted the outline of a figure sat in a chair across the room. The chair was positioned so as to be almost facing away from where my uncle was stood but slightly to the side. He then realised that the figure in the chair was pointing to the pyramid on the wall! His heart racing, he tried to muster the courage to shout at this intruder and demand that he get out of his house but as he tried to do this he felt a loss of control and his breath hissed out of his mouth with a mind of its own, wheezing the words "systematic review"! It was at this point that the shadowy figure turned to face my uncle, and this was the bit that I feel he truly struggled with. In his words, he described this fiendish figure as having the head and face of what he could only liken to an angry tangerine! He never got beyond this point of the tale as his rational brain simply cannot cope with the illogical nonsense of what was unfolding before his eyes. I have never been back there since hearing this tale. I will admit that I do have a curiosity to step into that room but some deep-rooted, primitive survival instinct will not let go of me.