Here's a documentry I've watched about satanic black metal in Norway.
It's based on the book "Lords of Chaos".
It tells the story of the members of "Mayhem", one of the most notorious black metal bands of all time.
One of them is Varg Vikernes, who was than in prison for burning churches & murdering his fellow band member.
Varg also discusses the brutal suicide of the band's vocalist named "Dead".