A 17-year-old unwed mother, who was a high school senior at the time, gave birth to a child on her own and, ten years later, has submitted her story to Channel A's 'The Detectives' Trade Secrets' to find the child's biological father.

This episode covers how the client, while in high school, dated an adult man before losing contact with him, and came to give birth without ever knowing she was pregnant. The client reportedly had irregular periods and showed no pregnancy symptoms, so she was unaware of her pregnancy until just before giving birth.

After feeling sudden abdominal pain, she headed to the bathroom, where an urgent situation unfolded as the baby's head emerged. She ultimately delivered the baby alone in her own room. She had to handle the entire birth process by herself, even cutting the umbilical cord with scissors she sterilized herself.

The baby was born prematurely, at less than seven months and earlier than the due date, weighing only 1.95 kg. The child received intensive hospital treatment for a month due to malnutrition, anemia, and dehydration.

After the birth, the client told her mother and moved to a hospital. However, the biological father did not believe it when he heard about the birth and never visited the hospital. The client and her father went to the biological father's house in person, but the matter was not resolved even in a meeting with his family.

The client, who has still been unable to reach the biological father, is preparing a lawsuit for paternity acknowledgment and child support. However, as she knows no specific information other than his name, she reportedly requested the detectives of 'The Detectives' Trade Secrets' to confirm his whereabouts.

This story recently gained attention on social media. On the show, Defconn could not hide his surprise at the client's confession, saying, 'Really? Does this really happen?' while Yoo In-na expressed anger over the biological father's attitude, saying, 'How can anyone be so senseless?'

The story will be revealed on Channel A's 'The Detectives' Trade Secrets' on Monday, September 14, at 10 p.m.