This is the story of human lie detector and an terrible liar who simply cant tell a falsehood. The story unfolds with female protagonist who possesses the uncanny ability to detect lies, crossing paths with a man notorious for his terrible lying skills and thats how their journey begins.

Male lead Kim Seung Ju aka Kim Doha, is a suspect in his ex-girlfriend's murder. Evading the authorities for years he lives in seclusion haunted by guilt. Although he is innocent of the murder he bears the weight of responsibility for her death. What transpires when he encounters person with the gift of detecting human lies forms the crux of the plot.

As for the storyline, it started on a promising note and the romantic elements developed smoothly over the course of 16 episodes. Yet at certain points, show seemed to meander and the execution of the murder mystery plot left much to be desired save for the startling last minute twist which caught everyone off guard.
Murder mystery plotline was riddled with plot holes that I found rather disconcerting. Kim Doha's perpetual self-blame even after the passage of 6-7 years, at times grated on my nerves. Nevertheless I did appreciate the manner in which the female lead stood steadfastly by his side aiding him in overcoming his guilt.

Another aspect that left me disheartened was the way Kim Doha's helped his ex-girlfriend's brother in evading the police. Despite the brother's attempt to kill him and the kidnapping of one of his friends, Kim Doha helped to escape him from police, resulting in severe injury to an innocent character. What if the that character had died from injury?? Kim Doha would have been burdened with yet another decade of guilt.

While the murder mystery plotline suffered from poor execution featuring Doha miraculously stumbling upon clues out of thin air the final plot twist proved to be a delightful surprise. It was something that none of us predicted previously. While some viewers didn't like the plot twist, citing homophobia, I didn't look at it from that perspective. In place of him, even a straight girl who had a crush on him could have accidentally killed his ex-girlfriend. So, more than anything, I liked the plot twist for its unpredictability.

Coming to the love story, it was well developed from start to finish. The chemistry between both lead actors was palpable and the last two episodes with their sweetness, redeemed the overall viewing experience. Were it not for these final episodes my rating would have undoubtedly been lower.

In terms of acting both lead actors, Hwang Min Hyun and Kim So Hyun delivered commendable performances. Hwang Min Hyun adeptly portrayed Kim Doha's fragile, introverted persona, while Kim So Hyun shone brilliantly as the human lie detector.

In summary I would categorize this as an exceptional romance drama though the murder mystery subplot left much to be desired in terms of development.