How Did Lupita Tovar Die?

Guadalupe Natalia Tovar Sullivan, known professionally as Lupita Tovar, was a Mexican-American actress. She is best known for her starring role in the 1931 Spanish-language version of Drácula, filmed in Los Angeles by Universal Pictures at night using the same sets as the Bela Lugosi version, but with a different cast and director; and her leading-lady role in the British-made Buster Keaton feature The Invader.