This was an expertly plotted show. It was perfectly structured and paced. Both the protagonists and antagonists were intelligent, intriguing characters which made for a very satisfying watch. The flashbacks and character building scenes were integrated into the narrative well, they fleshed everything out without compromising the story's forward momentum. It did bug me how treacly and emotionally uncomplicated the father/daughter reunion was though (she was too perky and precocious, he was too quickly and unambiguously devoted to her), and how cavalierly the 4 year relationship between the mom and the second ML was brushed aside. With just a fraction of the screen time I thought the show handled the consequences of morally compromised parents being separated from their children better with the Chairman Han/long lost assassin son and Congresswoman Jo/disabled son subplots.