Episode #1.5 - S1-E5
Continuity mistake: When Eugene returns to his office, after Moore asks "did you get your revenge", the shot cuts to Gwan-su saying "He kept asking, so I had to tell him" and we can see Eugene removing one of his gloves. In the next shot, the glove is back on his hand and then removes it a second time. (00:12:26)
Episode #1.2 - S1-E2
Continuity mistake: When Minister Allen is speaking with the Korean officials about the terrorist attacks on foreigners, he has his hands placed on his blazer, but there is one closer shot where his hands cannot be seen on the blazer, only to reappear about two shots after. (00:45:48)