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Cha Giho sees Gangjae's declaration of war on Mujin as an opportunity. Suspecting Jiwoo is up to something, Jeon Pildo tails her. (Netflix)
Gallery (17)
Photo © Netflix
![Undercover - Episode 4 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/777/165777114_cae7f8.jpg)
Photo © Netflix
![Undercover - Episode 4 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/777/165777115_0bc421.jpg)
Photo © Netflix
![Undercover - Episode 4 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/777/165777116_81773d.jpg)
Photo © Netflix
![Undercover - Episode 4 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/777/165777117_db4ab7.jpg)
Photo © Netflix
![Undercover - Episode 4 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/777/165777118_b97380.jpg)
Photo © Netflix
![Undercover - Episode 4 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/777/165777119_64bacb.jpg)
Photo © Netflix
![Undercover - Episode 4 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/777/165777120_f140fd.jpg)
Photo © Netflix
![Undercover - Episode 4 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/777/165777121_cd2d38.jpg)
Photo © Netflix
![Undercover - Episode 4 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/777/165777122_65e21c.jpg)