horror - adj. intended to cause feelings of fear, dread, and shock

monster - n. a powerful person or thing that cannot be controlled and that causes many problems

doppelganger– n. someone who looks like someone else; a double; in literature, an "evil twin"

characters - n. a person who appears in a story, book, play, movie, or television show

cast - v. to assign roles for (a play or movie) to actors

host - n. a person who talks to guests on a television or radio show

narrator n. a person who says the words that describe what is being seen or heard as part of a movie or television show