Film.com's FREE movie of the week is "Nosferatu: A Symphony of Horror." This 1922 classic of cinema based on Bram Stoker's "Dracula" (but with names changed) directed by F.W. Murnau and starring Max Schrek in one of films most famous and frightening make-up jobs.
The basic concept of many horror movies is that there is a monster of some kind, and the heroes have to destroy it or be killed by it. Sometimes the monster is something that's obviously frightening, like a werewolf or vampire.