"IRIS 2" Lee Joon's identity has become questionable.

During the 14th episode of the KBS drama "IRIS 2", Yoon Shi Hyuk (Lee Joon) began acting odd while carrying out Choi Min's (Oh Yeon Su) orders to keep an eye on Jung Yoo Gun (Jang Hyuk).

When Choi Min faces a dilemma where she might have to hand over IRIS agents Ray (David McInnis) and Lee Su Jin (Yoon Hoo Hee) over to Yoo Joong Won (Lee Beom Soo), she tells Yoon Shi Hyuk "You're the only one I have faith in." Choi Min then gave her a special assignment.

Just in case things went out of hand, Choi Min secretly put a tracking device on Lee Su Jin. She then tells Yoon Shi Hyuk to chase Lee Su Jin if IRIS runs away with Lee Su Jin and Ray.

However, unlike what Ray had requested in the past to let him go with Lee Su Jin, he runs away after killing Lee Su Jin in a gun fight with Jung Yoo Gun. Even when Yoon Shi Hyuk was watching Ray and Yoo Joong Won run away, he does not shoot his gun while running after him.

On the chase, Yoon Shi Hyuk began to act suspiciously. While he was watching Jung Yoo Gun fight with Ray, he pretended not to see and told his co-worker, "We should just keep watch and arrest them after."

Jung Yoo Gun kills Ray and begins to track down Yoo Joong Won. After seeing this, Yoon Shi Hyuk suddenly notifies somebody and follows Jung Yoo Gun.

Right after Choi Min had expressed her trust in him, Yoon Shi Hyuk began to act suspiciously. Shooting in the wrong direction and not chasing after the IRIS agents made Yoon Shi Hyuk look very suspicious.