In Dr. Jekyll and Mr. Hyde, the plot is frequently driven forward by secrecy and deception; Mr. Utterson doesn’t know the relationship between Dr. Jekyll and Mr. Hyde, and he wants to find out. Also, by omitting the scenes of Mr. Hyde’s supposedly crazy debauchery, Stevenson allows our imaginations to run to wild and eerie places.
By choosing not to explicitly detail Mr. Hyde’s wickedness, Robert Louis Stevenson creates a spooky, supernatural, general character that encompasses "All Things Evil."