In the sixth episode of The Art of Sarah, Mu-gyeong embarks on a relentless quest to elicit a confession from Sarah. He ingeniously flips her narrative by provoking her into proving her innocence. She permits a DNA swab, but the results reveal no match in the database or to the partial print found at the crime scene. Mu-gyeong realizes that she knew this all along, which is why she allowed the test. With no progress in sight, the Chief assigns Inspector Lee to take over the case and accuses Mu-gyeong of selfishness. However, Sarah remains silent until Mu-gyeong is reinstated. She empathizes with his plight and bitterly laments that they must fight for what is easily granted to others solely due to their status. But Mu-gyeong remains skeptical of her sincerity, warning him that con artists target intellectuals like him who believe they cannot be fooled.

Back to the interrogation, Sarah shares her timeline. After the Boudoir launch party, she visited Samwol Department Store to inspect the construction of Boudoir's physical shop. She then checked into a nearby hotel at 10 am and stayed there for days until she arrived at the precinct. Jae-hyeon discovers that Samwol was indeed building a Boudoir store until a few days ago, but it has all been torn down now. Moreover, all CCTV footage has been deleted, indicating that Chairman Choi Chae-u lied about canceling the Boudoir contract long ago.
Mu-gyeong attempts to question Chairman Choi at an exclusive party but is refused entry. He is instantly let in when Jae-hyeon arrives, as the rookie's father, an assemblyman, is present as well. In their confrontation, Mu-gyeong confronts Choi with charges of evidence destruction. He notices that she is wearing the genuine red Birkin, which she reveals was specially ordered for her, not Sarah. She blames Mu-gyeong for her impulsive evidence destruction as she didn't know Sarah was a con artist until Mu-gyeong told her a few days ago.
The CCTV footage shows Sarah dragging a suitcase containing a corpse to Samwol's trash chute, and Chairman Choi only deleted it to protect her store. Mu-gyeong threatens to expose her, which would be unbecoming of a policeman. It turns out that they have both recorded their conversation, exposing each other. As a sign of trust, they destroy their phones and agree to work together.
The scene unfolds with a sense of tension and intrigue, showcasing the complex web of deception and betrayal that surrounds Sarah and her associates. The characters' interactions and motivations are vividly portrayed, making for an engaging and intriguing episode of The Art of Sarah.
Sure, here's a more polished and vivid version of the same content in English:
Flashbacks reveal Sarah approaching Samwol with a proposal to launch Boudoir. Chief Director Kim Hong-mi belittles her and rejects the idea. This prompts Sarah to turn to Ji-hwon and force him to seduce Chairman Choi. He discovers that Choi always leaves her phone behind, recording conversations when she goes to the washroom.
On the day Sarah deliberately spills wine on Yeo-jin, the women discuss Boudoir as the new trend and how Choi is outdated. Annoyed, Choi visits Boudoir and, after the roofie incident, records Hyo-eun gossiping about her. She is impressed when Sarah scolds Hyo-eun for being crude.
Finally, Choi has Kim Hong-mi propose a Boudoir store in Samwol. As expected, Sarah keeps her waiting all day. Hong-mi suspects her since none of her European contacts have heard of Boudoir as an English brand. She demands paperwork for the routine evaluation, but Sarah refuses.
She pretends to have more lucrative offers from Samwol's rivals and orchestrates an accidental meeting with Choi where she talks about how Boudoir is her baby. As a business-first person, Choi relates to her. She also helps blacklist Hyo-eun following Sarah's fake accusations.
Next, Sarah accuses Hong-mi of being a mole for a rival company and gets her fired too. Choi is so obsessed with Boudoir that she even considers disregarding the evaluation as Sarah plays hard to get. There are also rumors of a Sarah Kim getting drunk and making a scene everywhere she goes over the weeks.
One such rumor arrives when Sarah is with Choi and the latter tries to report the fake Sarah to the cops. But she is shocked that Sarah stops her. Back then, she didn't think much of it, but now she realizes that Sarah would have been exposed if the cops had asked for her identification proof to charge the fake Sarah.
The extravagant launch party convinced Choi to finalize the Boudoir contract without the evaluation. And that's where she saw the fake Sarah in Sarah's outfit and hairstyle. She also had the same height and build as Sarah. The cops head to the launch party's venue, and while the CCTV has been cut, there are signs of violence and blood. The designer confirms that Sarah had ordered two copies of the same dress. Forensics confirms that the DNA on the pins match Jane Doe, but it doesn't match the blood or partial print at the crime scenes. Mu-gyeong realizes that Sarah chose him to keep up her con.