Continuity mistake: Wan-ik is being questioned by Deok-mun. After Wan-ik says "How am I supposed to read it when it's covered in blood", he places the bloodied note he is holding on the table. A couple seconds later, he is suddenly holding the note in his hands again. (00:05:54)
Continuity mistake: When Hui-seong approaches the authorities who have Dong-mae tied up, Hui-seong raises his hat. The hat can be seen right in front of Dong-mae's face. When the camera changes angles, Dong-mae's face can be seen in the foreground, but the hat is no longer visible in frame. (00:11:30)
Continuity mistake: When Moore is speaking with Minister Allen about continuing the investigation into Joseph's death, just after he finishes saying "It was a missionary who died", Allen can be seen lowering his hands. The camera then changes angles to focus on Moore, and we can Allen lowering his hands a second time. (00:39:53)