Context: Victorian Empire & Crime
The World Doyle Wrote For
Arthur Conan Doyle published The Sign of Four in 1890, during the height of the Victorian era. Britain ruled the largest empire the world had ever seen, stretching across India, Africa and the Caribbean. The novel is soaked in the consequences of that empire: the Agra treasure comes from India, Jonathan Small lost his leg to a crocodile while serving as a British soldier in India, and Tonga is brought to England from the Andaman Islands. For a Victorian reader, the empire was a source of national pride — but Doyle shows its darker side, where colonial violence follows people home.
Understanding this context is essential for the exam. You need to connect Doyle’s choices to the world he was writing in, using AO3 (context). Every reference to India, the army, and the treasure links back to the realities of empire.
The British Empire is central to the plot. The Agra treasure was stolen during the Indian Rebellion of 1857, Jonathan Small served as a soldier in India, and Tonga comes from the colonised Andaman Islands. Doyle shows that imperial violence abroad creates consequences at home in London.
Victorian London: Fog, Poverty and Class
The London of The Sign of Four is a city of extremes. Doyle moves his characters between wealthy drawing rooms and the grimy docks of the Thames, between the respectable homes of Camberwell and the crowded wharves of the riverside. This contrast reflects the stark class divide of Victorian society. Mary Morstan is a governess — educated but without money. Thaddeus Sholto lives in gaudy luxury. The dockworkers and street children (the Baker Street Irregulars) represent London’s poorest.
Doyle uses London’s fog and darkness as more than setting. The fog represents moral confusion and hidden truths. Watson describes a “dense drizzly fog” that hangs over the city in Chapter 3, as they travel to meet Thaddeus Sholto — they literally cannot see what lies ahead, just as they cannot yet see the solution to the mystery.
The novel opens with Holmes injecting a “seven-per-cent solution” of cocaine. In 1890, this was perfectly legal. Cocaine and opium were widely available in pharmacies and were even found in everyday products. However, attitudes were beginning to shift, and Watson’s disapproval in Chapter 1 reflects growing medical concern. Doyle, himself a trained doctor, uses Holmes’s drug use to show that his brilliant mind becomes self-destructive without intellectual stimulation. The drugs are not glamorised — Watson calls the habit a “pathological and morbid process.”
The opium trade was also tied to empire. Britain had fought two Opium Wars with China (1839–1842 and 1856–1860) to protect its hugely profitable trade in the drug. The presence of opium in the novel is another thread connecting London back to imperial exploitation.
The Rise of Detective Fiction
Doyle was not the first writer of detective fiction, but he made it massively popular. Edgar Allan Poe’s C. Auguste Dupin stories (from the 1840s) and Wilkie Collins’s The Moonstone (1868) established the genre. However, Doyle created the template that still dominates today: a genius detective with a loyal companion who narrates the story. Holmes uses deductive reasoning — observing tiny physical details and drawing logical conclusions — which reflected the Victorian fascination with science and rational thought.
The Metropolitan Police’s Criminal Investigation Department (CID) had been created in 1878. Real detectives were becoming public figures, and Doyle tapped into this cultural moment. Holmes’s superiority over the police detective Athelney Jones reflects a popular Victorian view that official institutions were often slow and incompetent compared to brilliant individuals.
Doyle built on earlier detective fiction by Poe (C. Auguste Dupin) and Collins (The Moonstone), but created the definitive template: a genius detective using scientific deduction, narrated by a loyal but less brilliant companion. This pairing of Holmes and Watson influenced virtually all detective fiction that followed.
Doyle (1859–1930) was born in Edinburgh and trained as a doctor at the University of Edinburgh. His medical professor, Dr Joseph Bell, was famous for diagnosing patients through close observation of tiny physical details — the direct inspiration for Sherlock Holmes. Doyle struggled to attract patients to his medical practice, so he began writing fiction to supplement his income. A Study in Scarlet (1887) introduced Holmes, and The Sign of Four (1890) was the second Holmes novel, commissioned by Lippincott’s Magazine at a dinner where Oscar Wilde was also present.
Doyle’s medical training is visible throughout the novel. Watson is a doctor and army veteran; Holmes approaches crime like a scientist examining evidence in a laboratory. The emphasis on observation, evidence and logic reflects the Victorian belief in empiricism — that truth could be discovered through careful study of the physical world.
Why This Context Matters in the Exam
AQA Paper 1, Section B gives you an extract from The Sign of Four and asks you to write about the extract and the novel as a whole. AO3 (context) runs through the entire question — you must show understanding of how Doyle’s choices connect to Victorian society, empire, class, gender, science and the detective genre. The strongest responses weave context into every paragraph rather than adding it as a separate block.