The Strange Case of Dr. Jekyll and Mr. Hyde by Robert Louis Stevenson is a Gothic novella that explores the dual nature of humanity. The story centers on Dr. Henry Jekyll, a respected scientist who becomes obsessed with separating his good and evil sides. To achieve this, he creates a potion that transforms him into Edward Hyde, a malevolent alter ego free from moral restraint.

As Hyde, Jekyll experiences a new sense of freedom, but Hyde's actions grow increasingly violent.