Episode #1.6 - S1-E6
Continuity mistake: When Samsin sees the woman she looking for, she hands her case to Weol-ju. Weol-ju's left hand is shown along the side, towards the front of the case. A woman that Samsin is pointing to asks if she is talking to her. When it cuts back, Weol-ju's left hand has moved to the back of the case. (00:21:12)