 As in the first two movies in the series, the names of several  characters are references to horror film makers. The characters  "Wendy and Julie Christensen" are named after  Benjamin Christensen (qv), director of _Häxan (1922)_ (qv); the  character "Erin Ulmer" is named after Edgar G. Ulmer (qv); the  character "Lewis Romero" is an homage to the horror directors  Herschell Gordon Lewis (qv) and George A. Romero (I) (qv); the  character "Jason Robert Wise" is a reference to  Robert Wise (I) (qv), director of _Haunting, The (1963/I)_ (qv);  the character "Carrie Dreyer" is named after  Carl Theodor Dreyer (qv), director of  _Vampyr 