The shocking trail of crimes and family history of a man who impersonated a bus driver and committed various offenses at urban bus depots will be revealed.

On Channel A's 'Detectives' Trade Secrets,' airing at 10 p.m. on the 10th, detectives track down a man who disguised himself as a bus driver for years, moving between multiple depots based on tips from citizens.

This man wore a bus company uniform to dine at employee facilities and ride buses for free, and was also caught stealing cash from another company's bus fare box. Moreover, at one depot, he pretended to be a trainee driver, sat in the driver's seat, and manipulated the gears, creating a near-crisis situation that almost led to a major accident.

The detective team narrowed down his area of activity based on testimonies from bus drivers and met with a convenience store part-time worker who had been close to him. According to the worker, the man introduced himself as a bus driver and approached her first, offering a fake job opportunity by saying, 'If you get a large vehicle license, I'll hire you as a driver.' He later asked to borrow money, but when refused, he reportedly cut off contact.

Using this testimony as a lead, the detective team conducted additional investigations at the apartment complex where the man was believed to reside. Neighbors testified that he lived with his grandmother, and when the detectives met the grandmother in person, she shed tears while talking about her grandson and shared an unexpected story.

Seeing this, Kim Poong lamented, 'He shouldn't do that to the grandmother who raised him.' The impersonator's parents also revealed, 'We also reported our son to the police,' shocking the studio. Kim Poong pointed out the severity of the situation, and Defconn expressed concern, saying, 'If left as is, there is a high possibility it will lead to a major crime.'

Meanwhile, singer Yuk Joong-wan will appear as a guest detective on this broadcast. Yuk, who recently moved to Mokdong for his child's education, said, 'There's a lot of flat ground and parks, so my wife and child are satisfied, but I feel like I'm living in a different world. I'm the only person in Mokdong who gets drunk,' drawing laughter. He also shared an episode about drinking during the day with his younger brother, a Hongdae musician, starting from 11 a.m., and falling in a flower bed when it was time for children to come home from school.

In addition, behind-the-scenes stories of Yuk Joong-wan's married life and an impromptu live performance of his new song 'What Are You Going to Do' will be featured on the broadcast.