The Invisible man vs Dr Jekyll and Mr Hyde
These two books have very similar themes
The Invisible man is about a scientist named Griffin Who researches optics and discovers a way to make himself Invisible but unfortunately becoming invisible actually destroys his life, turning him against mankind, and turns evil.
Dr Jekyll and Mr Hyde id about a doctor who discovers a way to split his personality into two distinct human beings: the rational, intellectual side and the physical, desire- driven side. Hyde isn't considered evil but did evil things.