Are you ready for the Mafia Wars Boss Fight Event? Starting this Friday (August 13, 2010), you'll get your chance to beat the Feds! For 10 days, you'll be taking on 4 bosses with the help of your mafia, and will work on earning a coveted mastery item for Las Vegas. The bosses will each have 3 levels for you to beat. Once you beat them all at the first level, you progress to the next level to continue fighting for your mastery. Each level you complete will give you a special reward, so be sure to finish them all to claim all the prizes!