Mystery 6 Episode 5

Leeteuk jumps into the water and saves Donghae as Eunhyuk frantically watches and then pulls him out of the water. They are able to revive him after Leeteuk performs CPR, but Donghae is visibly distraught by the accident, saying he felt as if his legs were being dragged down. The next morning, Sungmin and Siwon tell that they also saw ghosts in their sleep the night before. Super Junior go for a day out in Thailand, visiting a zoo and trying out Thai boxing. Later, Ryeowook asks the manager to find Gayoung's mother in order to take another look at the diary, only to discover that she has disappeared. Gayoung tells how a classmate named Lim Joomi had committed suicide, and that she is haunting her. On the internet, a photograph is posted of Joomi, and her reputation as a vicious bully resulted in receiving horrible comments by netizens. This abuse ultimately led to her suicide. In the diary, Gayoung writes that the ghost begins telling her "Will you die too?" Looking back at the scribbled note Donghae had written during his trance, it is revealed to be the same words. (Source: Wikipedia)