Law Abiding Citizen

"A brilliant man orchestrates  series of high-profile murders that grip the city of Philadelphia - all from inside his jail cell. The prosecutor assigned to his case realizes he is the only one who can end the reign of terror"-www.imdb.com


The movie confuses me to what the writer is trying to tell his audience.  Is it that the justice system has loopholes? or the fact that we should take justice in to our hands? At the end of the day, what good came out of it?  Wrong is wrong whichever way you put it. The scheming of Gerard Butler reminded me of Prison Break .