A man on an amusement park ride makes a phone call crying out for help. Moments later, he is thrown off the ride and killed. CID officers trace the call he made to a banker, who is soon found shot dead at his office upon investigation. The room he was in was, however, locked from the outside- and although he was shot, there is no trace of a bullet in his body. How will CID solve this case? Watch this episode to find out now.