The duality of human nature (Good/evil)
“Austere with himself” (1)
“I incline to Cain’s Heresy” (1) – i.e.
“Am I my brother’s keeper”? – Stays out of others business
Reuputation, Science and society
“Where Utterson was liked he was liked well” (3)
Silence, secrecy and deceit
“They were both pale and there was an answering horror in their eyes” (7) – with Enfield
Fear, horror and violence
“his blood ran cold in his veins” (5)
Mystery, tension and suspense
“If he be Mr. Hyde… I shall be Mr. Seek” (2)