There are several types of monsters represented in horror films that reflect different cultural fears. The external monster represents an outsider threat, like vampires invading a community. The man-made monster is exemplified by Frankenstein's creation, tapping fears about unconstrained science. Most modern horrors feature the internal monster, like Norman Bates, that show evil emerging from within normal human beings. This internal monster speaks to contemporary fears about psychology and the potential for human malevolence in a less religious society.