Horror films

Following yesterday´s activity in class, watch the trailers and answer these questions:
-What is going on in the trailer?
-What is the title of the film?
-Three of these trailers are of films we discussed about yesterday, another one is of a new film. Which trailer is it?

-Have you seen any of these films? Which is the scariest for you? Which is the most original? Happy Hallowe'en...