If you chose:
the person calling for help (you are Greg Lestrade)
the person saving the dying man (you are John Watson)
the person standing by watching (you are Mrs. Hudson)
the person organizing the saving team (you are Mycroft Holmes)
the person killing the man (you are Sebastian Moran)
the person organizing or commanding to kill the man (you are James Moriarty)
the person who's dying (you are Sherlock Holmes)
or
the person's who's video/taking pictures (you are Kitty)
If you are Greg Lestrade, you're usually the one with command over a handful of people. Though they may not be much they listen to you because you are equal and fair.
If you are John Watson, you're the one who's usually helping others. If someone is to suddenly collapse on the ground, you will mostly be the person running to help that person.
If you are Mrs. Hudson, you're usually timid and you rarely like to get into things. Although you may not obtain much skills, you have a big heart.
If you are Mycroft Holmes, you mostly like to commander of the group. You enjoy organizing events and is the backup of the entire group.
If you are Sebastian Moran, you look at the world in a much more different way than others. You are not bad, you only do things for your own good.
If you are James Moriarty, you are the commander. There's no one else like you, you're the dictator of the world. Congratulations, king.
If you are Sherlock Holmes, you're dying. Have fun.
If you are Kitty, you enjoy videotaping. You constantly go on Facebook, Tumblr, Instagram, and Twitter, you're very sociable online. Yet you may be an annoying stuck up sometimes, but the media always requires your video.