444. Case Number 444: The Invisible Danger

This week, the members gather at a mysterious room. As they enter the room, they find the dead body of a staff member. The members need to gather clues to find the culprit who killed him. As they move on to the next stage, some members become the prime suspect. At last, the members divided into two teams to solve the final mission. Stay tuned to find out the culprit and the final winner.