Against the Mafia

Based on the song 'Miss Jackson' by Panic! At the Disco and LOLO.
Braelynn Kingsley, a master seductress assassin, 'Miss Jackson'. She is famous for her skill, no one knows who she is, or who she works for. Her disguises change daily and her skill is unmatched.
Carlo Baresi is a man you don't want to mess with. He is the king of the Italian Mafia, he tortures people with no remorse and kills for fun. He controls Italy and can do whatever he wants.
So what happens when his best friend and second in command gets killed, with a letter on top called 'Miss Jackson'? Will he catch the infamous seductress, and what happens if he does?