Well I assume by making the evil Mr.Hyde twisted and wizened to induce Horror although that's just my idea.
Dr. Jekyll and Mr. Hyde is by Robert Louis Stevenson.
The reason that Dr. Jekyll had a problem with Mr. Hyde was that Hyde was practically everything evil about Dr. Jekyll. Combined with physical appearance and his evil personality, there was nothing to like about Mr. Hyde.
In the novella "The Strange Case of Dr Jekyll and Mr Hyde," the story concludes with the revelation that Dr. Jekyll and Mr. Hyde are two personalities of the same individual. Dr. Jekyll dies, leading to the eradication of Mr. Hyde as the potion that transforms him is destroyed. The consequences of their actions are highlighted, showing the destructive nature of indulging in one's dark side.
there is more than one theme in the play. temptation society science anarchy religion etc