I think I must have missed the very beginning, so I didn't realise it was a fictional drama.

By the way, did you see the live Halloween special of Inside Number 9 in 2019? It was inspired by Ghostwatch. Part way through there were some technical difficulties, and they had to show a repeat of a previous episode instead. Many viewers turned off, thinking that it was a real fault. Turns out it was all part of the plan...

I watched it the next day on catch-up, rather than live, so I knew it was a fake fault. What followed was still scary, though...