A Study in Scarlet begins with Dr. John Watson, the narrator, settling in London to recover from a wound and illness he sustained while acting as a military doctor during the Second Afghan War. One day he runs into an acquaintance, Stamford, while at a bar. Watson confides in his friend that he needs a new living arrangement, as his previous one was too expensive. Stamford responds that another friend of his has also expressed this desire, and takes Watson to the university laboratory where his friend -Sherlock Holmes -is working on an experiment. Stamford gives some background information on Holmes, such as the fact that his true profession is unknown, that he is eccentric and brilliant, and that his knowledge is specialized but diverse. After discussing their personal idiosyncrasies, Holmes and Watson decide to live together. Watson watches the enigmatic Holmes and notes his strange behavior and interests. The living arrangement proves itself pleasant for both men.