Mystery 6 Episode 1

Super Junior appear on the show voicing concerns over Donghae's strange nightmares, and that they had caused him to become increasingly weak. Donghae explains his dream as seeing a ghost hanging over him. Special guest Harisu also tells of a ghostly encounter she had in Japan, and had visited a psychic to learn more about the ghost. Seeing that this was a similar situation, Super Junior allow security cameras to film inside their dorms in the next 6 weeks. In the first week, a strange figure appears in the CCTV in a corner sitting beside Donghae's bed. (Source : Wikipedia)