Yu Bo Na lives a double life: corporate manager by day, elite assassin "Kingfisher" by night. Now, her worlds are colliding. New stills reveal her hunting a target at a casino, while her husband—an investigative reporter—unwittingly stalks the same location.

Will her secret unravel? Catch the high-stakes drama on August 14 at 9:50 p.m. KST.

The ultimate showdown begins now.