Unknown Madness

This is about a story about the "Unknown Madness" squad. The whole city of "Selve" fear this squad, because of the members in it with deadly plans. The squad contains 4 people "The Sniper", "The Mafia", "The Boss" and especially "The Killer". "The Killer" is the leader of the gang and tell tasks to the others meanwhile "The boss" is the one in charge in doing plans and charges in the squad. "The Mafia" the one who do the work with "The Sniper". "The Sniper" the one who is with the Mafia and also do the work.
All of the members in the group work as a team. Somehow, the killer...people don't know it's identity and gender only the members know, she/he always covers it face and rarely talk, all she/he do is just give Orders and Tasks.