The Sign of the Four

Main Ideas

• Detective investigation and logical reasoning: the book showcases Sherlock Holmes' mastery in analyzing clues and logical thinking, enabling him to solve complex crimes.
• Theme of greed and betrayal: the story revolves around treasure and betrayal, leading to tragic consequences for many characters.
• Colonialism and its consequences: the plot touches on the theme of British colonialism in India and its impact on people's lives, including issues of justice and moral dilemmas.
• Friendship and collaboration: the relationship between Sherlock Holmes and Dr. Watson highlights the importance of trust and cooperation in achieving common goals.
• Romantic subplot: the book also includes a romantic subplot between Watson and Mary Morstan, adding depth and personal development to the characters.