The Invisible Man (1933)
- The novel takes place in the 1890s; the film takes place in 1933.
- In the novel, Griffin remains almost a completely mysterious person, with no fiancée or friends; in the film, he is engaged to a woman and has the support of her father and his associate.
- In the novel, Griffin is already insane before he makes himself invisible; in the film, it is the invisibility drug that causes his madness.
- In the novel, Kemp lives; in the film, Griffin kills him.