Professor Albin Eberhart von Franz: We are here encountering the vampyre... Nosferatu.
Revealing mistake: When Professor von Franz (Willem Dafoe) sets fire to Knock's coffin, the flame jets can be seen under the casket.
Trivia: One year before this film's release, actor Nicholas Hoult, who plays Thomas Hutter, played the title character in "Renfield", another Dracula movie.