Episode #1.4 - S1-E4
Continuity mistake: When all the people are in Eugene's office, a man walks up to Gwan-su and Gwan-su then brings him to Eugene. Gwan-su has his hand on the man's shoulder in one shot, but when the shot cuts, the hand is no longer there. (00:35:27)
Episode #1.4 - S1-E4
Continuity mistake: When Ae-sin is speaking with Seung-ga about getting cornered at the train station, in the shot where Seung-ga says "Thanks to that, we have a new type of equipment to work with", there are two strands of hair on the left side of Ae-sin's head that can be seen freely blowing in the wind. When the shot cuts to Ae-sin, the two hair strands are tucked behind her ear. (00:13:53)
Episode #1.4 - S1-E4
Continuity mistake: After Eugene leaves Ae-sin on the train after speaking with her, Hudo is standing outside looking at the fabric on her dress. In one shot, her right-hand fingers are positioned above the fabric she is holding. But in the next shot, her right-hand fingers are positioned to the side of the fabric. (00:06:53)
Episode #1.4 - S1-E4
Continuity mistake: When Moore is speaking with Eugene about where Gwan-su has gone, in the shot where he says "I need go buy something and I haven't seen him around", the gat (smoking pipe) that Moore is holding is upright, then when the shot cuts, it is tilted to the right. (00:33:50)
Episode #1.4 - S1-E4
Continuity mistake: At the poker match, in the close-up of Ae-sun placing the two playing cards on the table, both cards are positioned at a rotated angle. When she attempts to reach for the money in the next shot, the cards are at a straight angle. (00:19:20)