On their way to the Art Valley Jae-suk comments that Jong-min doesn't look like a detective but looks very much like a singer. Jong-min is in fact a successful singer in South Korea.
The format of the event the detectives attend seems to be heavily inspired by UK theatre company Punchdrunk. In their productions guests wear masks then follow the actors from room to room, acting as observers piecing together the fragmented story. At time of writing Punchdrunk has shows in London, UK; New York USA; and Shanghai, China.