This week, the Running Man members will finally be able to find out the secret behind the briefcase they tried their best to deliver last week. The briefcase has a three-digit passcode, and through various missions, the members will receive hints regarding the passcode. Furthermore, Jang Do Yeon joins them as a host and a mysterious woman who is in charge of the briefcase. What is the hidden truth behind this briefcase? (thetvdb.com)