The very first episode of Sherlock called A Study in Pink, a BBC TV production that aired first in 2010, follows the pattern of Sir Arthur Conan Doyle's original story A Study in Scarlet and starts with Dr John Watson and the traumatic experiences he made in Afghanistan where he served as a military doctor. After a severe injury, he returns to London, visits a therapist and is in search of a flatmate. His former classmate at Barts, Mike Stamford, introduces him to Sherlock Holmes, an eccentric self-claimed consulting detective who occasionally visits the medical and forensic facilities of Barts in order to broaden his knowledge in "The Science of Deduction". From the moment John Watson enters the medical laboratory, Holmes deduces all important information such as his prior occupation in Afghanistan and that he has got a brother with alcohol problems. Dazzled by what he has witnessed, Watson agrees on sharing a flat with the weird but also fascinating detective and moves house to 221B Baker Street in London, the British capital the series is set in as is the original story. Shortly, Holmes is asked for help by Scotland Yard's detective inspector Lestrade in a complicated case, a "serial suicide" he has already poked his nose into before officially being called by the police, and offers Watson to accompany and even assist him at the scene of crime. For Holmes, there is no doubt that it must be a serial murder instead of suicide and he bursts into joy while connecting the clues, much to the scepticism and annoyance of Donovan and Anderson, two fellow inspectors of Lestrade. In the course of the episode, Holmes seeks for the pink thread through the case, namely the scarlet thread in the original A Study in Scarlet, investigates on his own and makes Watson do the dull work that is too much of a nuisance to him. He gets into trouble with the police for withholding evidence but, finally, he draws the correct conclusions, follows the murderer and reveals the entire case.
"... somebody who we trust even if we don't know him ..."
"... somebody who passes unnoticed wherever he goes ..."
"... somebody who hunts in the middle of a crowd ..."
