One night, two memories: the cast and creators of Liar

A first date looks quiet and affectionate as two people study a menu together. The next day, they describe the same night very differently. MBC’s Liar begins inside that gap. Its first broadcast was scheduled for October 30 at 9:50 p.m. KST. The characters and creators offer a starting point for following the romance as it turns into a psychological thriller.

King Kong by Starship

A reunion after ten years

Yoo Yeon-seok plays Min Jun-ho, a heart surgeon raising his son alone. When someone with a respected profession and reputation explains an experience, how readily do others believe him? The distance between a compelling first impression and the judgments that follow is part of this character’s appeal.

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Seo Hyun-jin plays Kang Ji-seon, an elementary-school librarian. Her wish to grow closer to Jun-ho gives way to the need to explain the night she remembers. The actors reunite ten years after Dr. Romantic, this time portraying both mutual attraction and incompatible accounts.

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A scene can look different depending on whether warmth or hesitation catches your eye first. In the opening episode, remember the details where the accounts separate, rather than deciding by who speaks more calmly.

The director’s relationships, the writer’s question

Jo Young-min previously worked with Yoo on The Interest of Love and with Seo on Love Me. Their established rapport now moves into a story built on suspicion.

MBC Jo Young-min

Why do we come to believe certain words are true? An approach that avoids easy judgments of good and evil, combining realistic empathy with unpredictable psychological tension. Writer Baek Jae-young · Official writer interview

The director’s earlier work adds context to the reunion. Do You Like Brahms? and The Interest of Love explore feelings that words cannot fully explain. His credits also include Love Me and You and Everything Else. Notice how small expressions and pauses in conversation shape a relationship before deciding whom to trust.

In her official interview, Baek Jae-young asks why people accept certain words as truth. She describes an interest in realistic empathy and unpredictable psychological tension, rather than dividing characters neatly into good and evil. Read alongside the director’s past work, that question gives the conflicting accounts a sharper focus.

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Four people around the case

Ok Ja-yeon plays Lee Hwa-young, an inspector in the women and youth division at Sangcheon Police Station. Her commitment to principles adds a perspective beyond the two accounts. Lim Sung-jae plays Park Seok-gu, Hwa-young’s husband and a UDT officer. Their marriage reminds us that the person investigating also has a family and daily life.

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Kim Ji-hyun plays Kang Ji-eun, Ji-seon’s older sister and an anesthesiologist. Lee Chun-hee plays Kim Hyeong-su, Ji-eun’s husband and Ji-seon’s brother-in-law. These family and professional connections bring different perspectives to the incident. The official character guide helps establish who is close to whom before the conversations begin.

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Watch how the looks change

Compare the teaser’s affectionate moments with the point where the expressions shift. After watching the first episode, return to the detail you believed first. That change in your own judgment can become part of the suspense.

Watch: MBC broadcasts and replay. The first-broadcast slot was October 30 at 9:50 p.m. Korean time. Check the official platform for regional access and replay conditions.