Detectives' Trade Secrets chased a father who had registered a child born from an affair as the legitimate child of his ex-wife after their divorce, and a gripping pursuit unfolds as an unprecedented situation arises with events crossing by just one day.

On the 30th (Mon) at 10 p.m., Channel A's Detectives' Trade Secrets segment "Detective 24 Hours" features a request from a half-sister who says, "I want to remove my half sibling, born from my father's affair, from the family register," which runs into unexpected difficulties. The client says that when she was in the first year of middle school, her father had an affair with an employee at the hair salon he ran. The client's mother tried to keep the family together, but the mistress's pregnancy eventually led to a divorce. It emerged that the affair partner was also a married woman with an 8-year-old son, adding to the shock. But the real problem came afterward. The client revealed, "Dad secretly registered the half sibling on the family register as my mother's child without my mother's knowledge," shocking everyone. In fact, the family relation certificate the detectives checked showed that the out-of-wedlock child the client's father fathered before the divorce was listed as the child of the client's mother. The client asked for help, saying, "I want to correct the incorrect family relationship before the half sibling becomes an adult." Watching this, Defconn said, "What an unbelievable story," and was at a loss for words.

In this week's episode, the Seagull detective team goes to the address listed on the client's father's resident register to begin a full-scale inquiry. But they hit a hurdle from the start when a neighbor testified, "That house moved." A decisive clue that "a married couple lived there and ran a hair salon" added weight to the possibility that the person was the client's father. The detectives headed straight to the hair salon the neighbor named, but the shop was already empty, leaving them frustrated again. Workers who were renovating the site said, "The hair salon moved yesterday," and added testimony, "They even came this morning to pick up remaining items," revealing that they had narrowly missed the client's father by a hair. Defconn lamented, "They moved just one day earlier. What a pity," and Kim Poong also could not hide his regret, saying, "No wonder it seemed to be solved too easily." With confirmation that both the house and the salon had recently moved, the inquiry returned to square one, and the Seagull detective team expressed anxious feelings, saying, "It feels like going between heaven and hell." Whether they can overcome the obstacles to find the client's father and the outcome of this breath‑taking pursuit draws attention.

Meanwhile, this episode welcomes Lee Seokhoon, member of Korea's representative vocal group SG Wannabe and dubbed a "signature emotional voice," as a one‑day detective, adding fresh energy. Toward Lee Seokhoon, known for his gentle image and sweet charm and called the "original guilty man," Defconn asked a pointed question: "It's your 10th wedding anniversary now; has your attitude toward your wife changed?" Lee Seokhoon replied with his trademark witty banter, "Married people don't ask these questions. It's always single people who give looks like 'how can I end that love?'" and turned the set into a sea of laughter. He didn't stop there, stirring the set with candid, loving remarks and unexpected answers.

[Photo] OSEN DB, Channel A provided

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