Streaming platforms can be a maze sometimes, especially when hunting down specific shows like 'Damien.' I stumbled upon it a while back while browsing Tubi—they occasionally rotate free content, and I got lucky. The ads weren't too intrusive, and the quality was decent. Another spot worth checking is Pluto TV; they've got a horror section where 'Damien' pops up now and then. Just keep in mind that free platforms often shuffle their libraries, so it might not be there forever.
If you're okay with a trial run, Peacock sometimes offers a free tier with limited content, and I think I saw 'Damien' there once. Otherwise, your best bet might be a library card—some local libraries partner with Kanopy or Hoopla, which have hidden gems like this. It's wild how much legal free content is out there if you dig a little!