Watch Demonium

This is a 2002 German thriller. It tells the story of a young family and their friends as they meet at a deceased relative's expensive house. There are disastrous consequences throughout. Creepy situations galore as well. While at the reading of the relative's will, each individual is killed one after the other. This film isn't for the faint of heart as blood and guts sequences are plentiful. There is a fight between the remaining family members and the murderers as they attempt to save their lives. A recipe for a magic potion is what the killers are really searching for.