Supernatural fiction is not always the easiest genre to write in and be original and innovative. A lot of tropes and cliches get re-used and re-hashed over and over again. Haunted houses, dark pasts, missing, psychic or dead children, ghosts, unreliable narrators- they are all familiar examples within the medium.
In 2001 I wrote a supernatural ghost story called 'Requiem', and I eventually published it in my 2010 short story collection 'Beyond Twilight'. It was about a ghost hunter called Nick Weston who stays at a supposedly haunted house in a strange little village. Nick is haunted by the death of his wife, and is actually a sceptic when it comes to the supernatural. He's very much a hero of the sort James Herbert would have written for his lurid horror novels, but as the story progresses he becomes an unreliable narrator.
I noted recently that the BBC had made a supernatural series called 'Requiem'. The fact that the title was the same was not unusual, as many words and titles get re-used in different works of fiction, across varying media. The first coincidence was that it was also the title of a supernatural ghost story narrative, like mine was. The hero is a heroine in this case, a cello-playing young woman. Then I read a little more about it, that the central female character is haunted by past loss, and that she ends up in a strange little Welsh village with weird locals, and stays at a supposedly haunted house, and she's an unreliable narrator. Oh, and there's a character called Nick in it. So...quite a few coincidences.