Eight years ago, the World Cup stage masked a lethal encounter. New stills from A Bona Fide Killer reveal Yu Bo Na, alias Kingfisher, executing a sniper hit amidst the cheering crowds.

Meanwhile, reporter Kwon Tae Sung’s pursuit of justice leads to a bloody rooftop collision. Their fates are forever entwined.

Witness the chilling origin story unfolding this August 21.