Holmes's friendship with Watson and jointly investigating the case. Knowing all of that until Watson, Holmes is planning to reveal the true killer, which causes the death of Holmes.
Sherlock is a friend with Arduino wattala and jointly pursue until all truth wears wattala that Sherlock is a murderer, so plan to unmask the truth which is to note that Sherlock d. death.
Sherlock Holmes as a friend, and allowing the case to investigate together until I know the truth, allowing all that Holmes was the murderer, it plans to reveal the truth that is the cause of the death Holmes