What Is That Key?

Overview

Young continues to investigate Jung Soo. In Ho, Hak Bum, and Tae Suk visit Joon Hee together and talk about what happened. As a suspicious video clip of Jung Soo leaving the Stellarium Villa in the middle of the night is found, Young gets surprised by an unexpected turn of events. Meanwhile, In Ho receives a USB from Byung Gi’s colleague.