Detective Investigation Files - Season 2 Episode 7

YI and CHI go to Japan to enjoy their holiday. Before getting abroad, YI meets HO whom is believed to have died for five years. YI delays his trip to find what has happened. YI and HO lived in the same walled village. HO left her home as she was forced to marry a man that she did not love. She went overseas to study design. SAN was HO's boyfriend. The police questioned him and suspected that HO had been killed by SAN as some blood stints were found on his jacket. SAN admitted that he had been in HO's house. Though he was suspected, the police did not have strong evident to prove him guilty. SAN was set free. Later SAN killed himself and left a letter stating that he felt guilty. YI checks the file of HO's case. He is shocked to see that SAN cannot kill himself with the rope as he used his left him. YI suspects that it is a homicide.