'IRIS 2' producers previously hinted that Lee Joon's character wasn't what he appeared to be, and his identity has finally been revealed!

On the 15th episode aired on April 3rd, Si Hyuk (Lee Joon) turned out to be a spy in NSS who actually worked for the terrorist group IRIS. Throughout the episodes, he'd been leaking secrets and pinning the blame on the others, and his motives as well as true identity were uncovered. Not only did he relay IRIS orders to Yoo Joong Won (Lee Bum Soo), he also murdered Song Young Min (A-JAX's Hyeongkon) in cold blood.

He played the part of a cold-blooded murderer perfectly, shooting his partner and then smiling while he said, "Ah, damn. I wasn't going to kill you." He ended the scene by taking one of the snacks that Hyeongkon stored on the side.

Did you always suspect Lee Joon's real identity on the show? How is 'IRIS 2' so far?