When I attended Monster Bash in 2017, I was fortunate enough to catch a presentation by Frank J. Dello Stritto on Columbia Pictures' 1943 black-and-white horror film, The Return of the Vampre, starring Bela Lugosi. In the film, Lugosi played Dracula once again, but for legalities' sake his character is named, "Dr. Armand Tesla." Also, he commands a cuddly werewolf henchman named Andreas.
Mr. Dello Stritto did enough research into the movie's background to paint Return of the Vampire as a truer sequel to Tod Browning's Dracula (1931) than any of Universal's Dracula sequels. He even concluded by reasonably suggesting that it serves as the perfect middle to a trilogy comprised of Browining's film and Abbott & Costello Meet Frankenstein (1948). From reading his book, A Werewolf Remembers: The Testament of Lawerence Stewart Talbot, I got an idea of how this trilogy would work. It's always bugged me how werewolf movies invest a lot of attention to the monster side of the character at the expense of knowing more about the human. Mr. Dello Stritto's book fully fleshes out Lawrence Talbot's character beyond his werewolf persona.