A heartwarming story of actor Shin Hyun-joon searching for his high school homeroom teacher after 40 years will be revealed on Channel A's 'Detectives' Trade Secrets.'

In this episode airing on the 27th, a case is introduced in which Shin Hyun-joon requests the detective team to find his 12th-grade homeroom teacher, Kim Eok-gwan, who had a significant influence on his life.

Shin Hyun-joon shared that when he entered Yonsei University's Department of Physical Education but was preparing for the audition for the film 'The General's Son' with a dream of becoming an actor, teacher Kim Eok-gwan's advice gave him great strength. He said, 'I can never forget his words: "If you go to college and your mind changes, don't give up on your dream.'"

■ Vanished Records and Remaining Clues

The detective team traced teacher Kim Eok-gwan's whereabouts through his last workplace, the National Physical Education Teachers' Association, and the Secondary School Principals' Association, but only received responses saying that no records remained.

Later, with the help of Shin Hyun-joon's high school alumni association president and a friend, they secured a clue that 'he learned to play the drums four years ago.' Through additional inquiries, they also discovered the fact that 'he stopped all activities three years ago due to health reasons.'

When the detective team visited teacher Kim Eok-gwan's home and met his wife, she remembered that her husband had been Shin Hyun-joon's homeroom teacher and was delighted. However, she could not finish her sentence, saying, 'If only you had come a little earlier...'

Seeing this, Yoo In-na asked, 'What could the words "if only you had come earlier" mean?' and Kim Poong also expressed his sorrow, saying, 'Why was his wife getting emotional while telling this...'

■ Sam Hammington Joins as a One-Day Detective... Ohtani Card Value Revealed

On this day's broadcast, Sam Hammington will appear as a one-day detective. He revealed affair scandals that occurred in the Australian football world 20 years ago, stating, 'At the time, the captain of a TOP-tier football team had an affair with the vice-captain's wife and was expelled from the team.'

Defconn mentioned the fact that an Ohtani rookie card was auctioned for 3.9 billion won last month and asked about the market value of Sam Hammington's limited-edition Ohtani card. Sam Hammington revealed the current price, saying, 'It's a card with only 25 in existence worldwide,' and added, 'I have a few more Ohtani rookie cards besides that one.' In response, Defconn joked, 'Thanks to Ohtani, my retirement is all set,' drawing laughter.

Meanwhile, Channel A's 'Detectives' Trade Secrets' airs every Monday at 10 PM.