Have to say at the beginning 2 - 3 episodes storytelling gave the impression of cat - mouse chase only to subvert it later by adding layers of plot twists in realistic way. So do watch for at least 4 episodes before considering to drop altogether, it's a slow burn. Both the leads does fall under some greyish morals making is more interesting to watch.

Cast performance especially shin ha kyun is outstanding making all more realistic to watch, happy to hear he won the award. More than story, the show draws it strength from the conversations and powerful dialogues between leads and characters. Hope to see more thrillers with power pack performances in near future.