Seo Hyun-jin Digs Into Yoo Yeon Seok's Secret in 'Liar' Episode 5

Actress Seo Hyun-jin is going after Yoo Yeon Seok's secret in the MBC drama "Liar". Ahead of Episode 5, the show's team released new stills of Seo as Kang Ji-seon on Nov. 12.

"Liar" airs Fridays and Saturdays on MBC. The psychological thriller follows Min Jun-ho (played by Yoo) and Kang as they clash over the truth.

Who viewers should believe has shifted with each episode. In Episode 2, the results of a lie detector test were revealed and raised doubts about Kang's claims. Episode 3 shifted the focus. It showed a different side of Min, and suspicions toward him grew.

Episode 4 brought new details about the case. Viewers learned why Kang was judged to be lying during the lie detector test. Min's hidden side also came to light. Now, all eyes are on what Kang will do next.

In the new stills, Kang visits an unfamiliar place. She is wearing the same outfit she had on at the airport in Episode 4. In one shot, she looks shocked after finding something. In another, she is in a serious conversation with a new character.

Her change in attitude stands out. Earlier in the series, Kang was branded a "kkotbaem," a harsh Korean label for a woman accused of using men for money. She lost her job as a teacher and went through a hard time. This time, she is set on exposing who Min really is, and she takes matters into her own hands.

"In Episode 5, Kang Ji-seon starts digging into Min Jun-ho's secret for real," the production team said.

"Kang Ji-seon claims she was harmed by what happened 'that night,' so this is something she has to do," the team added. "At the same time, it's her desperate way of surviving and pulling herself back up as she falls apart. We hope viewers will show a lot of interest in actress Seo Hyun-jin's strong performance, which captures Kang Ji-seon's desperation in raw detail."

"Liar" airs every Friday and Saturday at 9:50 p.m. KST.