The opening mystery
The novel begins with Mr. Utterson, a lawyer, walking with Mr. Enfield. Enfield recounts how Mr. Hyde trampled a girl and then paid compensation using a cheque signed by the respected Dr. Jekyll. The episode connects the strange door to Jekyll and prompts Utterson to investigate: Jekyll’s will leaves his estate to Hyde if Jekyll dies or disappears. In The Story of the Door, this contrast between a respectable public figure and a disturbing stranger establishes the mystery.
Escalation and revelation
Later, Hyde murders Sir Danvers Carew with a walking stick that Utterson recognises as a gift to Jekyll. Jekyll claims Hyde has gone and presents a farewell letter. A handwriting comparison shows that Jekyll and Hyde’s writing is the same. Dr. Lanyon’s death and sealed letter deepen the suspense. When Utterson and Poole enter Jekyll’s locked laboratory, they find Hyde dead; the papers reveal that Jekyll and Hyde are one person.
Duality and consequence
- Jekyll’s experiment separates aspects of human nature into distinct physical identities: respectable Jekyll and hidden, evil Hyde. Initially, Hyde offers Jekyll freedom from social consequences. But the transformation becomes harder to control: Jekyll changes into Hyde without taking the potion, and cannot reverse the change. The story presents duality as a dangerous inner conflict, not a stable division that Jekyll can safely manage.