From Universal Pictures on these "Universal Studios Monsters", this was almost like a silent film as this shows Bela Lugosi as the famous Count Dracula. Based on the book by Bram Stroker.
After Mr. Renfield is possessed by Dracula after taking a warning by the villagers, he and Dracula take on London as Dracula can only come out at night, while his assistant spends his whole life in a mental hospital. The way the see Dracula, is because he doesn't have a refection, and he hates the church cross. Luckily, he was no more after placing a stake through his heart.
This, might've showed the beginning of "Universal Studios Monsters".