Corrected entry: Not called a horror movie when it came out because that term was not used as a film genre.
Corrected entry: When the Monster meets the little girl Maria, she is kneeling and holding a kitten. In the next shot she has stood to greet the approaching Monster as she speaks to him, but the kitten is gone and nowhere in sight.
Corrected entry: Baron Frankenstein says that his son's lab is in an old abandoned windmill. It is actually in a watchtower.
Correction: The actually Baron says the lab is in a watchtower, not a windmill. The windmill appears at the end of the film.
When the Baron is speaking to Victor and Elizabeth at about the 26 minute mark, he says: "Why does he go messing around in an old ruined windmill - when he has a decent house, a bath, good food and drink, and a darn pretty girl to come back to. Huh, will you tell me that?" So this is a valid mistake.
Correction: Not true, the horror genre has been around for well over a century: http://www.aijcrnet.com/journals/Vol_2_No_4_April_2012/16.pdf.
ctown28 ★