D.I.D. 12 Episode 9

The “New Seven Deadly Sins” case becomes a citywide sensation, leading to a special live broadcast where police representatives and psychologists are invited to speak. During the program, Chan Tsun Fai calls in and demands that Ying Hoi and Ding Lok Fung appear on air. He also sends a livestream showing To Chi Chun and Yeung Tsz Fei being held hostage. Tsun Fai publicly claims that Ying Hoi suffers from dissociative identity disorder and suggests that one of his personalities is the killer. He forces Yeung Tsz Fei, under threat to Chi Chun’s life, to analyze Ying Hoi on live television, and also broadcasts incriminating footage of him. After seeing the video, Cheung Mun Kwong also becomes convinced that Ying Hoi is the murderer and orders his arrest. (Source: Chinese = TVB || Translation = KamilaRN at kisskh)