Oystein "Euronymous" Aarseth was one really screwed-up dude. The lead singer of the Norwegian death metal band Mayhem, Euronymous earned sufficient respect for his guitar-playing abilities and helped to put Norway's black metal scene on the map. But admirers could only give the guy so much credit before questioning themselves, since he was an outspoken Satanist who believed in "a horned devil." Thus, an Euronymous biopic would need a director like Simon Rumley, the British filmmaker behind the bleak, entirely discomforting knockouts The Living and the Dead and Red, White & Blue—someone who's not afraid to show humanity's darkest sides.

The film would veer into full-on horror movie land during what would most likely be its most controversial scene: the moment when Euronymous finds the body of a bandmate who blew his own head off with a shotgun, takes photographs of it with a disposable camera, and makes necklaces with bits of the man's skull.

Although, the biopic's most unpleasant sequence could be its climax, in which, following an argument, his Mayhem bandmate Varg "Count Grish" Vikernes stabbed Euronymous to death 23 times, including two to the head and five to the neck.