Forget the school run—Kong Hyo Jin is swapping spreadsheets for sniper rifles!

In MBC’s A Bona fide Killer, she plays Yu Bo Na, a corporate manager leading a secret, lethal double life as the legendary assassin "Kingfisher." Catch the high-octane action when this pulse-pounding drama premieres July 31 at 9:50 PM KST.

Can she balance motherhood and murder?