i'd need first hand evidence myself and stuff i couldn't possibly think was just my own mind, or a shared freak out, etc.
i've never seen the show and might even find it entertaining, but a tv show is literally the least trustworthy thing i can think of on this topic.
They try their best in the show to give proof of their findings. Show it to other credible people in the community, 3rd party video analyzers, etc.
My first hand experience? It was not a brush with evil but more good.
When my Grandmother had dementia and was nearing the end we had a caretaker come into the house for the over night hours so we could sleep. (This was years ago when I lived at home with the parents).
The caretaker would monitor my grandmother via night vision cameras in her room, and if she moved or tried to get up etc she would go in and assist.
Well one night I was up watching TV and the caretaker called me over, to look at the screen, and right there in front of us on the monitor was my grandma in bed along with a clearly defined outline of a person sitting at the end of the bed. Just the shadow outline but it was clearly there. She goes in to check on her and nothing, no one in the room not a sign of anyone. Check the monitor again and it is gone.
A few days later she passed away. Its not something I can explain but I saw it with my own eyes not a TV show. Using a monitor that we had used for months without any issues or sightings of anything out of the normal. Who was the figure? My Grandpa? The angel of death? other relatives? I cant say nor explain what I saw but I will carry it forever.