In this week's episode of SBS's "Running Man," one special member was asked to act as a guest and eliminate the remaining members as a mission. The 38th episode took the members to a hospital in Shinnae-dong that has yet to open, and put them on a mission to find a mysterious guest. While everyone took off, one member was taken aside and given a side mission to "eliminate the rest." The episode was more tension-filled than most, as over 300 people were brought in and transformed into doctors, nurses, and patients to fill the halls of the hospital. Because only a select few producers knew the purpose of the secret member, a reversal played by the member threw not only the other "Running Man" members into shock, but the staff members as well. Check it out on April 10th! Source: Newsen via Nate