Dramatic score
Night setting
Monsters
Mirrors
Creepy, abandoned houses, placed on a hill, mansions
Secret bookcases
Cobwebs
Science gone wrong
Thunder storms
Howling in the distance
Romance
Traveling to a destination
Trains, wagons
Typical spooky lab equipment- coils, sparks, "primitive" electricity
Creepy portrait paintings
Quiet, empty town
Detached music being played in another room
Candles despite electricity
Mysterious shadows