At the beginning of Elementary's second episode Joan Watson has dragged Sherlock Holmes to a session of a drug abuse support group but instead of listening to his 'comrades' Sherlock repeats a mantra over and over inside of his head. He does so in order to avoid feeding his brain with unnecessary information since the human mind is an attic one has to take care of and keep tidy to maintain splendid mental achievements. Filling the brain with useless knowledge, its finiteness is stodged to that extent that it cannot absorb any new and probably more important information unless one decides to delete any prior memories. At least that is how Sherlock's brain works. Shortly, he is called by Gregson to assist in a case that does not seem to be that difficult to solve at first glimpse but turns out to set a series of murder with peculiar circumstances rolling, committed by a apparently comatose woman. After finding out about the woman's twin sister, Sherlock reaches an impasse as the sisters prove to not be monozygotic twins, however, the motive for murder is connected to an inheritance dispute that arose after the twins' wealthy and well-known father had died and children who were begotten in several love affairs are now to benefit from the dead father's heritage. A hint that is spotted by the detective in a second support group session serves the correct solution of the case and proves that it can be useful to Sherlock to occasionally listen to others and make room for seemingly unnecessary information in his brain attic. As in the previous episode, Sherlock shows off his skills in deduction and raises suspicion in Gregson's assisting officer Bell who is convinced by the detective's abilities in the end and shakes hands with him as a sign of a well-functioning collaboration in the future.
