The Sovereign Order of Mont Cristo is a group of highly intelligent individuals hiding among us. We have no ideas how they came here or how long they will stay. All we know, or think we know is they are here and aren't going anywhere anytime soon.
The Order had inducted a number of humans since they came to Earth. They were kind of leery towards us at first but once they realized we were pretty much harmless they let us do our own thing and if own thing was harmful they intervened. However most of the time they didn't because they found us too amusing.
One of the Sovereign Order of Monte Cristo's favorite humans was Sherlock Homes. Sherlock Homes wanted to solve mysteries all day. They found it fun because he was really good at it. He even talked the Order into allowing his dear friend Watson to join. One day at dinner over conversation a member made mention of writing based on Sherlock. And the rest as they say is history.
The Order turned Sherlock and his adventures into a series of books. Everyone loved them. They even manage to get Dear Mr. Watson into the series. They through a big mystery when the first book came out in honor of Sherlock was so happy. He was not immortalized in print. And when he thought life could not get any better they started movies based on him. What Hollywood didn't know was that a couple of times they hired actors they got the real life Sherlock and Watson, and they didn't even know it.
Even today the Sovereign Order of Monte Cristo love Sherlock and Watson and their own, and happy they got to know the duo.