Continuity mistake: When Sa-hong pulls out the napkin used to tie Ae-sin's hair, some of her hair can be seen going over her shoulder. When the shot cuts, all of her hair is behind her shoulder. (00:12:26)
Factual error: When Eugene is searching through the drawers for the list of Joseon mobs, a book with Yogi Berra listed on the spine can be seen on top of the drawers. Yogi Berra didn't begin his baseball career until 1946, and he wasn't even born until 1925, over 20 years after this episode takes place. (00:18:40)
Continuity mistake: When Sa-hong catches Deok-mun threatening Ae-sun, in the shot of Deok-mun realising he is standing there, he has his hand raised in the air as he was about to hit Ae-sun. When it cuts to a wide shot, his hand is suddenly lowered. (00:44:59)
Continuity mistake: When Mrs. Haman hugs Ae-sin after Sa-hong dies, in one shot, Haman is shown placing her right arm over Ae-sin's shoulder. When the camera changes angles, her arm is much lower down Ae-sin's torso. (00:55:03)
