Among the first discernible sounds in Under the Skin—director Jonathan Glazer’s instant masterpiece of meditation-on-the-human-experience body horror—is Scarlett Johansson’s voice practicing sounds.

Some stars come out of nowhere, and others grow up in front of our eyes. Scarlett Johansson has been acting on screen since she was 9 years old. With a name worthy of a Henrik Ibsen character and a ...