Creepy Memories From My Childhood

This is not a singular story but a collection of incidents that occurred in my parent's house, during my childhood. I present them like this because each is too short and fleeting to be worth posting individually. So, here we go...

I grew up in an older home with a creepy backstory: it had belonged to a high school gym teacher who was exposed as a pederast after making overtures towards male students. He was dismissed from his position (though no criminal charges were brought against him) and later, if I recall correctly, committed suicide.

While he never appeared to me himself, I did experience a plethora of disturbing phenomena. The house was cloaked in an unnaturally 'thick' atmosphere, accompanied by persistent feelings of being watched, followed, and having one's thoughts read. Consequently, I would often peer over my shoulder, expecting to see something, and run up and down stairs. I don't know why, but this quality was felt the most intensely in two locations: the back of the basement (especially in the tool room/work shop) and the upstairs (especially my bedroom). Oddly, the first floor always felt fairly normal.

The first visual phenomena to emerge in addition to the general feeling of weirdness was what I now recognize as "shadow people". These included the diminutive running figures seen in peripheral vision, as well as an assortment of figures resembling the heads on Easter Island and one tall, looming figure I intuited was female. (Years later, my mother would admit to having witnessed these same appearances, albeit hers were gray and congregated on the stair steps).

The phenomena was most intense in my bedroom, where at night I saw a number of bizarre scenes. The first time I awoke in the dead of night to spot an emaciated, grey skinned figure with exposed bone tissue and viscera seated on the rocking chair in the middle of my bedroom, wearing tattered remnants of my father's clothing.

The next I saw a slideshow like sequence of images of a grim reaper figure and the Egyptian deity Anubis sipping tea together on a boat (!) as it passed through the Nile river. The most intense experience was a guttural, mocking laughter issuing forth from the far corner of my ceiling, which grew and echoed for several seconds until abruptly quieting.

These episodes, which kept me in a state of near constant fear and anxiety, declined in frequency until eventually ceasing altogether as I entered puberty. I would have one single "after the fact" experience when I was 14, in my bedroom, in which I heard very briefly a faint, tortured voice quietly call my name, as if it needed my attention.

In recent years, my father has admitted to feeling a sensation of darkness and dread in the basement work-room, where he kept his home maintenance equipment at the time. He's also asserted that one evening, as a small child, I saw something in the driveway through an upstairs window and was deeply frightened by it; I have no recollection of this, and he never saw the thing himself.

To ask bluntly, what do you think was going on in my childhood home?