Sherlock's office

As you may know, or you can find out in the story "The Sign Of Three", I, John Hamish Watson, am engaged to my one true love, Mary Elizabeth Morstan. It has been some time since I have watched in secret as the great Sherlock Holmes attempts to solve new mysteries without my help, only using his brilliant mind. However, I must say that my support has been simply irreplaceable for him. So, the question arises, who will replace me by the side of the genius Sherlock now that I have decided to trade a life filled with crazy and exciting adventures for the tranquility of a family hearth. Even Sherlock himself realizes that he needs a new friend in arms. Therefore, he has decided to gradually invite brave applicants into his office, where he will test their detective skills. Who knows, maybe you are the one who will manage to solve all the mysteries that cunning Sherlock has prepared for you in his study.