A behind story of Son Ye Jin crying her heart out was revealed.

Son Ye Jin revealed last week, "I picked this film because of the scenario's unconventional idea. Apart from the perpetrator or the victim, the scenario asks the question, 'What is the criminal is the person who needs to live the most?' Unlike the perpetrators and victims on the news, which never seem personal, I liked this chilling idea of a criminal in one's family."

The scene in the wheeled snack bar is a scene where Da Eun drinks with her boyfriend Jae Gyung (Lee Gyu Han) to comfort herself from the doubts against her father, and breaks down.

Director Guk Dong Suk said, "I received a letter from Son Ye Jin that she'd written in Da Eun's shoes, which portrayed the guilt and sorry for the father. Son Yu Jin filled up for the parts that were even unthought of in the scene, making the character of Da Eun as perfect as it can be."

"Accomplice" is a story of Da Eun, who suspects her own father as a criminal behind the kidnapping crime that received the public's attention right before the expiration of its status of limitations.