Kong Hyo Jin is back! In A Bona Fide Killer, she plays Yu Bo Na: a corporate manager by day and the lethal sniper "Kingfisher" by night.

The Twist: Her secret past threatens her family life. The Stakes: A high-speed cat-and-mouse game begins.

Catch the premiere on July 31 at 9:50 PM KST. Don’t miss the carnage!