What happens when you put 20 millions dollars worth of diamond in a secure vault, smack dab in the middle of the coldest city in the United States?
The answer: Mayhem!
Then what happens when those 20 millions dollars worth of diamonds belong to a relentless old Russian mob boss, that has countless men and women who will push the city to its breaking point in order to regain possession of said diamonds?
The answer: Chaos!
Multiply that answer by the fact that everybody has a gun and you'll get the reason why the murder rate in Philadelphia is about to shoot straight through the roof.
Exhale! It's only a Diamond Rush