A Study in Scarlet is a detective novel by Arthur Conan Doyle, published in 1887. It is the first Sherlock Holmes novel and it introduces the character of Sherlock Holmes and Dr. John Watson, who would become one of the most famous detective duos in literature.

The novel tells the story of a murder case that Sherlock Holmes is called upon to solve. The novel is notable for introducing Holmes’ methods of crime-solving, which involve close observation, logic and scientific methods. The novel also introduces the character of Dr. John Watson, who serves as a narrator and as a foil to the brilliant but eccentric Holmes.

“A Study in Scarlet” is widely considered a classic of detective fiction, and it is credited with popularizing the genre. The novel is known for its fast-paced and suspenseful plot, as well as its vivid and evocative portrayal of Victorian London. Additionally, the novel is also known for its memorable characters, including the brilliant detective Sherlock Holmes, his loyal friend Dr. Watson, and a cast of intriguing suspects and criminals.

Furthermore, the novel also has a historical and social context, as it is set in the late Victorian era and it explores themes such as poverty, class, and the role of women in society. Overall, “A Study in Scarlet” is a classic of detective fiction and the beginning of an iconic series that continues to captivate readers today.