When most of us think of Frankenstein, we think of the 1931 Boris Karloff movie that introduced us to a mute monster with a bolt in his neck. Unlike the book, the creature was violent evil from conception, as a result of having the brain of a criminal. This version, with its portrayal of grave-robbing to create the creature and the creature being unable to reason or speak, would become the standard vision of the book.
But twenty-one years before, Thomas Edison produced a silent film portraying the story. 1910. Check it out.