The finale of House of the Dragon was leaked on the internet a few days before it was supposed to air. The viewing experience for loyal fans of the show has been disrupted by this unlawful action and is being monitored and pulled from the internet, according to a statement given to IGN and Variety.
A colleague who watches the show tells me that it is very similar to George R. R. Martin's Fire and Blood, so it is not a new thing. If you want to go into the episode fresh, keep an eye out for anything that happens in the show.
The first season of House of the Dragon is coming to a close on Sunday. Hopefully it won't be unwatchably dark like some of the previous ones, you can watch it on the legal channels.