premise: Maniac (stylized as MANIAC) is an American short slasher film, directed by Shia LaBeouf. It was released on October 31, 2011. The short film stars American rappers Scott "Kid Cudi" Mecudi and Chris "Cage" Palko, as French-speaking serial killers. Mescudi and Palko also co-wrote the film with LaBeouf.
hypothesis: Shia LaBeouf directed a full length slasher film.
reason: He may have. We only know that he directed a short slasher film, we have no idea if he directed a full length one.