“ I Never Make Assumptions. Assuming is a Bad Habit.” A STUDY İN SCARLET is the first book of popular Sherlock Holmes series written by author Arthur Conan Doyle. The story features the introduction of Sherlock Holmes and Dr. Watson through mutual friends and a mystery revolving around a corpse found at a derelict house in Brixton, England. The novel establishes many peculiarities and the working styles of Sherlock and Watson, who would become the most famous detective duo in popular fiction. Ar ...