Iris Episode 4

This episode starts on the runway in Hungary where the North Korean scientist is murdered. This is where the first episode started. Hyun Joon is given his solo mission. Sa Woo?s jealousy of Seung Hee and Hyun Joon is clearly revealed. There are several signs that something pivotal is about to happen and a few action scenes. Seung Hee and Sa Woo both have private meetings with the Deputy Director. Sa Woo goes to where Hyun Joon is staying and the episode ends on a major cliff hanger.