Continuity mistake: Yi-Na had her head turned to the right while her dad Sang-Won was talking to her from the front seat and, eventually, Yi-Na closed her eyes. After a camera shift, Yi-Na's eyes were still closed, but her head was turned to the left. (00:04:17)
Continuity mistake: When Sang-Won was crawling on the floor following Heo Exorcist's instructions, his right fingers were above a girl's toes when Heo told him to stop and "Don't move a muscle." A little later, right before Heo told him to "get out", Sang-Won had both hands touching the floor. (00:52:50 - 00:53:38)