Speaking in the MTV series, ‘This is Horror’, led by the insight of literary horror aficionado Stephen King, Raimi reveals his methods and his approach to the genre as a whole. Upon multiple examinations and revisits to the genre, the director came to define horror by there main rules.

1.

The innocent must suffer.

2.

The guilty must be punished.

3.

The hero must taste blood to be a man.

Now while it’s not officially apart of the canon, Joel and Ethan Coen have suggested another law exists.

4.

The dead must walk.

Raimi comments on this potential additional rule in the interview:

“We’re still testing that law in our research lab to see if it holds true in all cases.