怪獸與牠們的產地
Morton appeared in "Fantastic Beasts and Where to Find Them" (2016), a spin-off from the "Harry Potter" film series, with a screenplay by J. K. Rowling. In the film, she portrayed Mary Lou Barebone, the leader of an extremist group whose goals include exposing and killing wizards and witches. "Fantastic Beasts" grossed US$814 million at the international box office, becoming Morton's most successful and widely seen film.