D.I.D. 12 Episode 8

Ding Siu Yan calls Ding Lok Fung, saying she wants to settle her conflict with their mother. Lok Fung rushes to the psychiatric hospital, only to find it engulfed in flames. He believes the fire was started by Siu Yan and Ho Tung, and concludes both have completely lost control. Police identify members of the online forum and begin interrogations. Meanwhile, Ding Siu Ting hacks into police phones and sends a video of Ying Hoi to Chan Tsun Fai, a victim’s relative, inciting a revenge plot. Tsun Fai breaks into Yeung Tsz Fei’s home and attacks her and To Chi Chun. When Tsz Fei regains consciousness, she discovers a bomb vest has been strapped to her, while Chi Chun is also seen wearing an explosive device—both now in immediate danger. (Source: Chinese = TVB || Translation = KamilaRN at MyDramaList)