Setting

• Jekyll's house

  "wore a great air of wealth and comfort though it was now plunged into darkness"

  his house represents his secret inner experiments which are now sinful

  metaphor "darkness" symbolises Hyde
• Jekyll's house

  "the door which was equipped with neither bell nor knocker"

  describes his laboratory where Hyde lives showing a contrast to the living standards of Jekyll and Hyde

  the entrance is anonymous and a haven for the outcasts of society

  it hides away Hyde keeping him as a secret
• "the pleasentest room in London"

  irony and juxtaposition as Jekyll's room is a facade for the true sinful and ungodly experiments