Luna arrived at the Lee mansion shortly before 9AM, she needed time to set up the polygraph machine. Unlike the equipment they used at the Lee Group building that day, the machine she brought was smaller and had a built-in monitor.
Luna alighted from the car and a butler greeted her at the door. He helped her bring the equipment inside and she began to set everything up. By the time she finished, there was still ten minutes to go. She asked the butler who helped if he had seen President Lee. The man explained that he was still working in his study and had given orders not to be disturbed. Luna naturally felt annoyed. Apparently, her brother was not taking the situation seriously. Swallowing her pride, Luna went to start the polygraph herself. When she stood in front of the bookshelf, she was a little confused to see that there were no guards. Maybe her brother was already talking to Mina inside? Thinking no more about it, Luna opened the door.
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