Okay, to set the stage:
My last apartment was in a rather old building. It was a corner unit, and the L-shaped walkway which took people from the parking lot behind the building to the apartment entrances on the front of the building passed right outside on both outer walls of my apartment, with windows overlooking the walk on both sides (south and west). So anything that happened on either side of the building, I could hear and/or see, with the exception of the units on the very far end of the "front" (south) of the building, and two units whose entrance was at the far opposite end of the building from me on the "back" (north) of the building, the parking lot side.
One of those two units belonged to my friend, the on-site manager of the building. Her bedroom wall was shared by another woman (Sharon) whose apartment entrance was on the south side of the building. She'd lived in the building for years and my friend had been the on-site manager there for several years, so Sharon knew my friend fairly well. Now, Sharon always seemed fairly nice and reasonable to me, though not without her quirks. For instance, each day she took the bus to work in the direction of downtown. Now, there was a bus stop literally 20 feet from the apartment building's parking lot for the line that went into downtown. But rather than walk from her apartment to the bus stop practically right outside her door, she would get in her car, drive 3 blocks to the NEXT bus stop down the same exact line, park her car in the street, and catch the bus there. But beyond this little bit of utter illogic, nothing about her ever twanged my "crazy woman" alarm.
So around midnight or 1 AM one night, I'm lying in bed, and I start hearing someone banging on the door of another apartment in the building, I mean really HAMMERING on the door. And then whoever it was moved to the next apartment and was banging on doors and windows there. And to the next apartment. And as whoever it is comes closer, I hear an angry female voice growling and snarling, "Where is she? Where is the *****? I'll kill her! Where is that *****?"
I don't dare open the blinds to try to see what was going on. I couldn't imagine that it was me she's looking for, but whoever she was, she obviously didn't know where her prey lived, and I wouldn't want some madwoman mistaking me for whatever "*****" she was searching for. For all I knew, it was a woman whose husband had been cheating on her who was searching for the woman he'd cheated with, and who was armed. So I didn't answer when she banged on MY door and windows and then moved on to the next apartment. I did, however, become concerned for the 87-year-old woman living at the far end of the building who might very well be frightened into a heart attack by this person, so when she kept going up and down the building pounding on doors and windows and demanding to know where the "*****" was, I called the cops. By the time they got there, however, she'd gone away, and so far as I knew at that moment, that was the end of it.
Until I spoke to my friend, the on-site manager, the next day to ask her if she knew what had happened.
My friend had been asleep in her bedroom at around midnight when she was awakened by the television blaring at top volume from Sharon's living room (which, as I mentioned, was on the other side of the wall from my friend's bedroom.) A couple minutes passed and Sharon didn't turn it down, so my friend got out of bed and went around the building and knocked on Sharon's door. Sharon snatched open the door wearing only a t-shirt and underwear and my friend asked her to turn her TV down as she was disturbing her neighbors. Sharon slammed the door on her, and my friend went back to her apartment and found the TV had thankfully been turned down. Until a couple minutes later when it was turned back up. And then she heard screaming and yelling and things being thrown from Sharon's apartment.
That is when Sharon went out searching for "that *****." She never actually went to my friend's apartment in her search, but she did go down to the apartment directly beneath my friends, a young couple with a new baby. Apparently she was convinced that "the black-haired girl" lived in that apartment and was demanding she come out. Now, as I mentioned, Sharon had lived there for several years and since my friend had been the on-site manager for several years, Sharon knew her name, and knew where she lived. Except that Sharon was so out of it, she DIDN'T KNOW HER.
My friend worked for the property management company that ran the building and the next day went in and reported what had happened, and they started getting things in line to issue an eviction notice (here in Oregon a landlord can issue a 30-day no-cause eviction notice.) It was, however, a bit of a mystery as to WHY it happened. Had Sharon gone off some medication she'd been taking? Have a breakdown? Maybe, but more likely, she'd just gotten out-of-her-mind drunk or high, because the next day she retained enough of her memory and senses to realize that what she had done could get her evicted. So she compiled a list of things wrong with her apartment that needed repairing and submitted it before the eviction notice could be processed, so that the eviction would appear retaliatory if it came down.
The woman was never right after that. One night another friend's dog was out in the parking lot and barked, and we heard Sharon bark back from her window. Freaky, freaky lady from that point on.